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# ThomasJuhlOlesen.dk

A blog about everything Microsoft security and collaboration related.

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## Posts

- [Copilot Agents in Microsoft 365: Who can use what ?](https://www.thomasjuhlolesen.dk/2026/05/copilot-agents-in-microsoft-365-who-can-use-what.html) - Microsoft made two changes in April 2026 that pulled Copilot in opposite directions. Chat disappeared from Word, Excel, PowerPoint, and OneNote for unlicensed users in tenants over 2,000 seats, and prepaid capacity packs started working without an Azure subscription. The licensing fog around agents got sharper, not simpler. This article maps the four layers admins need to walk before sharing a Copilot Studio agent (user license, authentication, sharing surface, consumption), pulls in a real test where an unlicensed user happily ran a tenant-grounded agent without a single capacity pack purchased, and explains why that doesn't break the rule, just exposes where the bill is hiding. It also covers the Work IQ toggle that quietly splits your agent's behaviour into two: one experience for licensed users, another for everyone else.
- [Microsoft Entra Backup and Recovery - is it hot ?](https://www.thomasjuhlolesen.dk/2026/03/microsoft-entra-backup-and-recovery-is-it-hot.html) - Microsoft Entra Backup and Recovery entered preview on March 19, 2026, bringing native rollback for users, groups, Conditional Access policies, and other critical directory objects. After testing a real recovery against a cloud-only user with a single attribute change, the restore itself took seconds. The difference report that preceded it took over an hour. This article explains why that timing is expected, what the five-day retention window actually means for your recovery posture, and where the feature falls short of being a complete answer.
- [Copilot Can Be Weaponized: What CVE-2026-26133 Means for Microsoft 365 Admins](https://www.thomasjuhlolesen.dk/2026/03/copilot-can-be-weaponized-what-cve-2026-26133-means-for-microsoft-365-admins.html) - Microsoft patched CVE-2026-26133 on March 11, 2026 — a cross-prompt injection vulnerability in Copilot's email and Teams summarization that let attackers shape what your AI told you, without a single attachment or macro. The specific exploit is closed. But the attack exposed something a patch alone cannot fix: Copilot trusts the content it reads, and in a misconfigured tenant, that trust is a liability. Here is what happened, why it matters beyond the CVE, and what admins should actually do about it.
- [Microsoft’s MX Change in July26: A follow up on my  DNSSEC and SMTP DANE articles](https://www.thomasjuhlolesen.dk/2026/02/microsofts-mx-change-in-july26-a-follow-up-on-my-dnssec-and-smtp-dane-articles.html) - Microsoft has announced a significant change in how new Accepted Domains in Exchange Online are provisioned with MX records. Between early and late July 2026 (previously February), MS will gradually switch provisioning of all A records for new Accepted Domains into the new subdomains under mx.microsoft. *.mx.microsoft At first glance, this may look like a
- [How to Configure Azure Communication Services SMTP Relay](https://www.thomasjuhlolesen.dk/2025/04/how-to-configure-azure-communication-services-smtp-relay.html) - A Modern SMTP Relay for Post-Exchange Environments As more organizations retire their last on-premises Exchange server, and as Microsoft Defender for Office 365 introduces more aggressive email throttling, many customers are facing the challenge of finding a new reliable SMTP relay. Azure Communication Services (ACS) with Email capabilities is emerging as a modern, scalable alternative.
- [Stop Letting “Anyone” Join to Your Domain: Modern, Secure Domain-Join for OT/IT AD's](https://www.thomasjuhlolesen.dk/2025/09/stop-letting-anyone-join-to-your-domain-modern-secure-domain-join-for-ot-it-ads.html) - Still running with legacy join settings? Attackers love it. Learn the modern model: MAQ=0, OU-scoped delegation (not SeMachineAccountPrivilege), DC allow-list for account reuse, and a guarded Staging OU before production. Bonus: Offline Domain Join for segmented OT sites.
- [Set Up Plus Addressing for Admin Notifications](https://www.thomasjuhlolesen.dk/2024/12/protect-your-admin-accounts-email-notifications-without-mailbox-licenses.html) - Licensing Microsoft Entra administrator accounts for email is a common practice, but it introduces avoidable security risks. Privileged accounts should remain isolated from unnecessary communication channels to minimize vulnerabilities. This guide shows how to set up email notifications for admin accounts without assigning them a mailbox license. We’ll also include visual steps for enabling plus
- [Cloud-managed Remote Mailboxes: What It Means for Your Business (and What You Can Do This Week)](https://www.thomasjuhlolesen.dk/2025/08/cloud-managed-remote-mailboxes-what-it-means-for-your-business-and-what-you-can-do-this-week.html) - Microsoft just introduced cloud-managed remote mailboxes for directory-synced users. In plain English: you can manage Exchange attributes for synced mailboxes directly in Exchange Online without keeping an on-prem Exchange server for recipient admin. This post explains what that means for your business, the most valuable use cases, when not to enable it, and a 7-step pilot you can run this week. If “the last Exchange server” has been blocking your roadmap, this is the feature that finally moves you past it.
- [The Many Faces of EWS: Past & Present Use Cases](https://www.thomasjuhlolesen.dk/2025/08/the-many-faces-of-ews-past-present-use-cases.html) - EWS in Microsoft 365: Why You Must Act Now As Microsoft 365 continues to evolve, one of the most impactful changes underway is the retirement of Exchange Web Services (EWS) in Exchange Online. While EWS has served as a core integration protocol for over a decade, Microsoft has made it clear: EWS is on the
- [Keeping Direct Send Safe: A Practical Guide for Microsoft 365 Admins](https://www.thomasjuhlolesen.dk/2025/07/keeping-direct-send-safe-a-practical-guide-for-microsoft-365-admins.html) - Attackers rarely miss an opportunity to twist a convenient feature into a phishing tool. Exchange Online’s Direct Send is the latest example: security researchers have documented campaigns that drop fake “internal” messages straight into corporate inboxes-no credentials required. Headlines warn that these messages “bypass SPF, DKIM and DMARC,” leaving IT teams wondering whether the standard
- [Information barriers in Teams - Getting started](https://www.thomasjuhlolesen.dk/2023/10/information-barriers-in-teams-getting-started.html) - In this article i will give you a guide on enabling and turning on Microsoft Purview Information barriers (IB) , with fokus on Microsoft Teams - this can be relevant across many sectors and industries catering for legal requirements, aswell as in schools and/ or higher education as a means to contain students in segments.
- [Securing Your Identity with Microsoft's New Authentication Methods](https://www.thomasjuhlolesen.dk/2025/04/securing-your-identity-with-microsofts-new-authentication-methods.html) - Microsoft will retire legacy multifactor authentication (MFA) and self-service password reset (SSPR) policies on September 30, 2025. Organizations must switch to the unified Authentication Methods policy in Microsoft Entra ID before this date. This guide explains how to: Identify legacy authentication methods. Migrate to the new policy. Verify that migration works as expected. Understanding Legacy
- [External Sharing Is Changing in Microsoft 365 - Are You Ready?](https://www.thomasjuhlolesen.dk/2025/06/external-sharing-is-changing-in-microsoft-365-are-you-ready.html) - Starting July 1, 2025, Microsoft will invalidate all legacy external sharing links in SharePoint and OneDrive that were created before your organization enabled Microsoft Entra B2B integration. That means anyone who accessed your content using an old OTP (one-time passcode) link is going to see an error instead. This isn’t just a security patch. It’s
- [Understand Opportunistic TLS and Email Encryption: A Deep Dive into S/MIME, Purview Message Encryption, and Secure Email.](https://www.thomasjuhlolesen.dk/2024/09/understand-opportunistic-tls-and-email-encryption-a-deep-dive-into-s-mime-purview-message-encryption-and-secure-email.html) - Enhancing Email Security: Opportunistic TLS and Encryption Solutions In Part 1 of this series, we explored how SMTP DANE and DNSSEC collaborate to secure email communications in Exchange Online, ensuring authenticity and encryption between servers. In this follow-up, we focus on two critical components of email security: Opportunistic TLS and email encryption. Specifically, we’ll examine
- [Boosting Email Security with SMTP DANE and DNSSEC: A Complete Guide](https://www.thomasjuhlolesen.dk/2024/09/next-level-email-security-smtp-dane-and-dnssec-for-exchange-online.html) - Introduction to SMTP DANE and DNSSEC Securing email communication is critical in the modern digital landscape. SMTP DANE (DNS-based Authentication of Named Entities) and DNSSEC (Domain Name System Security Extensions) are two technologies that strengthen email security by protecting against DNS-based attacks and ensuring encrypted connections between mail servers. What is DNSSEC? DNSSEC enhances the
- [Directory-Based Edge Blocking causing 550 5.4.1 NDR](https://www.thomasjuhlolesen.dk/2021/10/directory-based-edge-blocking-causing-550-5-4-1-ndr.html) - Issue Overview A customer faced a problem where all new users created in the past week and newly added proxy addresses failed to receive emails from external senders due to Directory-Based Edge Blocking causing 550 5.4.1 NDR. Internal emails worked fine, but external messages were rejected with the error: 550 5.4.1 [user@Customerdomain.com]: Recipient address rejected:
- [CoPilot Prompt Buddy - get started](https://www.thomasjuhlolesen.dk/2024/03/copilot-prompt-buddy-get-started.html) - Keep those EPIC prompts stored centrally and av. With the introduction of the Power App Prompt Buddy, Microsoft Teams users now have a streamlined solution for managing and sharing AI prompts. This tool is designed to enhance team productivity by facilitating the easy exchange of AI-driven insights and ideas. This post aims to guide you
- [Understand DMARC - and use it NOW.](https://www.thomasjuhlolesen.dk/2023/08/understand-dmarc-and-use-it-now.html) - What is DMARC DMARC, which stands for Domain-based Message Authentication, Reporting, and Conformance, is a crucial email authentication and anti-phishing technology designed to enhance the security of email communication. It helps organizations combat email fraud, phishing attacks, and unauthorized use of their domain names by allowing domain owners to specify policies for how their email
- [Sensitivity labels in Microsoft Teams - part 2: start labelling.](https://www.thomasjuhlolesen.dk/2023/03/sensitivity-labels-in-microsoft-teams-part-2-start-labelling.html) - Maybe you have been used to labels in documents and emails - now its also possible to label Teams and thereby protect the content inside the full team. In group level protection you can use the following settings for the labels Privacy (public or private) of teams sites and Microsoft 365 groups External user access
- [Sensitivity labels for Microsoft Teams - get started - part 1](https://www.thomasjuhlolesen.dk/2023/03/sensitivity-labels-for-microsoft-teams-get-started-part-1.html) - If you already have enabled labelling for Groups and Team sites in Azure, skip to part 2 of this series to see how to use them in Teams. Information protection in Microsoft Teams is important because it helps ensure the confidentiality, integrity, and availability of sensitive information that is communicated and shared within the platform.
- [Enable pop-up on incoming call in Teams](https://www.thomasjuhlolesen.dk/2023/02/enable-pop-up-on-incoming-call-in-teams.html) - Late last year it was finally announced that customers can enable a pop-up launching on an incoming Teams call, based on the number calling it could open a CRM application, ticket system or similar, basically any app that can take a HTML input with the number part of the string This post is associated with Microsoft
- [Concurrent Exchange Online licenses.](https://www.thomasjuhlolesen.dk/2023/01/concurrent-exchange-online-licenses.html) - In a recent blog post on January 20. the Exchange Team blog announced support for stacking exchange online licenses. Introducing Support for Concurrent Exchange Online License Assignments - Microsoft Community Hub There is several benefits to this new possiblity, mostly its great when you need to change the licensing plan for a user. For example.
- [MS Purview replaces OME encryption](https://www.thomasjuhlolesen.dk/2022/11/ms-purview-replaces-ome-encryption.html) - HEADS-UP - Purview will starting April 1. 2023 be replacing the legacy OME way of encrypting outgoing mail from O365. If you don’t do anything, Microsoft will process all mail flow rules that currently applies OME protection to Microsoft Purview Message Encryption protection. This will bring a much more secure and flexible end-user experience, that
- [Managing Holidays in Response Groups - no problem](https://www.thomasjuhlolesen.dk/2018/03/managing-holidays-in-response-groups-no.html) - If you also find it frustrating to manage RGS Holidays - look no further. I see alot of customers struggling to get this done, and look to different Powershell GUI's and unsupported addons - but often see issues when moving to a new server version. So powershell should be your one-stop-shop for this task. I
- [Teams shared channels - Governance](https://www.thomasjuhlolesen.dk/2022/04/teams-shared-channels-examples.html) - External collaboration in shared channels is powered by B2B direct connect, a new way to collaborate with other Azure AD organizations-no need to add the external user as a B2B guest. Azure AD admins can manage B2B direct connect using cross-tenant access policies. External collaboration is off by default. To enable a shared channel between
- [Let endusers manage Teams Call queues.](https://www.thomasjuhlolesen.dk/2022/08/let-endusers-manage-teams-call-queues.html) - Also known as Collaborative Calling. For some time it has been possible to let the Call queue membership be managed by means of Teams Channels, its surprising to me how few organization actually use this feature. Traditionally membership of Call queues is handled by IT - on request from Sales Management, Customer service etc etc.
- [Unassigned numbers in Teams - How to.](https://www.thomasjuhlolesen.dk/2021/12/unassigned-numbers-in-teams-how-to.html) - In Skype for Business server you have the ability to route unassigned numbers to an announcement, response group or user. This functionality is now available for Microsoft Teams in GA. If a customer calls a number and they are not made aware that the person has left, it could potentially mean loss of business. So
- [Manage MS Teams Call-forwarding in Powershell](https://www.thomasjuhlolesen.dk/2022/01/manage-ms-teams-call-forwarding-in-powershell.html) - Yes, this is finally possible - with the MicrosoftTeams 3.0.1 preview Powershell module came a set of super handy new cmd-lets for controlling Call forwarding for all users, and also for control og delegates and local Call groups. To get this to work you need to forcefully install the previews Powershell module https://www.powershellgallery.com/packages/MicrosoftTeams/3.0.1-preview Do that
- [Use Viva connections to integrate company portal into Teams](https://www.thomasjuhlolesen.dk/2021/05/use-viva-connections-to-integrate-company-portal-into-teams.html) - What is Viva Connections? Viva Connections is a new feature through which you can deliver your intranet directly to Teams. It takes company news, documents, lists and other content from your SharePoint Intranet, and makes available inside Microsoft Teams. The Viva Connections area in Microsoft Teams can be branded with logo and name, so it
- [MACP is now GA](https://www.thomasjuhlolesen.dk/2021/04/macp-is-now-ga.html) - Skype for Business Server 2019 Modern Admin Control Panel is now i GA - and with added features too - so time to get the patch installed on your SFB 2019 pool. The MACP is a much more modern feeling admin center for SFB - and most importantly, without the need for Silverlight ( YAY) -
- [Call Routing in Islands Mode](https://www.thomasjuhlolesen.dk/2021/01/call-routing-in-islands-mode.html) - Change is coming - if your organization is currently routing incoming calls in Auto Attendants to your Skype for Business endpoints, this will stop working by early February. In preparation for the retirement of Skype for Business Online (announced in this blog post , Microsoft are changing the Teams auto attendant transfer experience for the users
- [LYNC 2013 End of Support](https://www.thomasjuhlolesen.dk/2018/04/lync-2013-end-of-support.html) - Time flies - and this April of 2018 - all LYNC 2013 server and client version are end of Mainstream Support.Ending mainstream support for a product means Microsoft will no longer be enhancing that product. What it does NOT mean is there will no longer be fixes for security and reliability issues. Microsoft will continue
- [Microsoft Teams coexistence modes - get the journey right.](https://www.thomasjuhlolesen.dk/2019/02/microsoft-teams-coexistence-modes-get.html) - As more and more organisations are now beginning to either pilot, or fully adapt Microsoft Teams, i often get questions like, where do we begin and whats the best migration path from SKYPE for BusinessAnswers are never the same, because it depends on the individual org's current situation combined with the plans and requirements for
- [Making Flow, planner and Teams collaborate](https://www.thomasjuhlolesen.dk/2020/09/making-flow-planner-and-teams-collaborate.html) - Whenever you spot a process in you org that is manual, you should think, could i automate this or maybe remove some friction by letting Flow help you out. For the sake of demo, i created the a extremely lightweight Bug tracking system, based only on standard builtin templates, and running inside Office365 apps -
- [Lists in Microsoft Teams - usecases](https://www.thomasjuhlolesen.dk/2020/09/lists-in-microsoft-teams-usecases.html) - So recently the lists app showed up in my Teams client. This may seem as a small step for man, but i think Microsoft Lists could be a real gamechanger in terms of how we traditionally think about things like gathering info, storing documentation etc. Just how many has their PC's documented in a excel
- [LockDown Teams custom backgrounds and blur.](https://www.thomasjuhlolesen.dk/2020/05/lockdown-teams-custom-backgrounds-and-blur.html) - The Teams background feature really gained some traction, now when joining meetings we always spend the first minute or so giving credits to the most impressive and creative uses of custom background - so now you've had your fun, lets lock down the feature :) I have added a lot of custom background myself, this
- [SFB Server 2019 CU2 HF1](https://www.thomasjuhlolesen.dk/2020/03/sfb-server-2019-cu2-hf1.html) - What’s New This HotFix addresses the MACP issues that some customers struggled with since last update. It build on CU2 - updating two components, the MACP and Core components. It takes the build from 7.0.2046.151 to 7.0.2046.216. Check your build with get-csserverpatchversion in powershell Also some new features will be added to the MACP -
- [Create announcement in Teams and crosspost.](https://www.thomasjuhlolesen.dk/2020/03/create-announcement-in-teams-and-crosspost.html) - Sometimes you dont need or want to start a debate, you really just need to put the message OUT there. One of the recent enhancements tom Teams is the ability to create announcement,s and also control the interaction level of the readers. Go to "posts" and go to the Entry field for new post like
- [Templates in Teams](https://www.thomasjuhlolesen.dk/2020/03/templates-in-teams.html) - Ever wondered how to get access to your company templates directly from within Teams ? Follow this guide and let your users create documents with Logo etc. This is the standard view. Now go open the Document Library directly in Sharepoint. And there in the gear icon top right, select "Library Settings" Click "Advanced Settings"
- [Reply with IM is (sort of) back in Teams](https://www.thomasjuhlolesen.dk/2020/02/reply-with-im-is-sort-of-back-in-teams.html) - In my opinion a pretty much overlooked feature, that is potentially a timesaver - I think moving conversations from Outlook to chat can potentially save time, and speed up decision processes. While we all wait for the general launch of the sharing feature between Outlook and Teams - its now possible to use the good
- [CU2 for Skype for Business server 2019 released](https://www.thomasjuhlolesen.dk/2019/12/cu2-for-skype-for-business-server-2019-released.html) - Hello Folks. Cu2 has been released for SFB server 2019, and it contains a long list of fixes and improvements. Download is found here https://www.microsoft.com/en-us/download/details.aspx?id=58347 Version-number for core bits is 7.0.2046.151 To find your current patch level run this command on a SFB server get-csserverpatchversion KB article here: https://support.microsoft.com/en-us/help/4470124/updates-for-skype-for-business-server-2019 List of fixes: 4525498 Ability to add
- [CCE Download bits fails](https://www.thomasjuhlolesen.dk/2019/12/cce-download-bits-fails.html) - For some time there has been an error in the Cloud Connector Edition install scripts, causing the initial download of bits to fail. This was corrected in the fall of 2019, but it seems the error has returned. When you run start-ccdownload the server goes to MS to get the latest and greatest bits, but
- [Email in Teams](https://www.thomasjuhlolesen.dk/2019/10/email-in-teams.html) - Working daily with Teams, it becomes more and more apparent that Microsoft sees Teams as the Hub for not only Teamwork, but also a lot more, i often refer to Teams as a kind of looking glass towards underlying apps and files, giving the users a OneStopShop for the tools and info they need to
- [The Caveats of OPCH](https://www.thomasjuhlolesen.dk/2019/09/the-caveats-of-opch.html) - Yeah sorry bout the title... thanks MS for the lovely OPCH acronym BTW :) As Microsoft recently announced the End-date for SKYPE for Business Online, a lot of organisations are now in the process of moving their Onprem SFB Enterprise voice workload to SFBOnline, in order to achieve a more smooth migration to Teams with
- [SFB Server 2019 Hotfix 1 released.](https://www.thomasjuhlolesen.dk/2019/06/sfb-server-2019-hotfix-1-released.html) - Hello folks. A Hotfix has been released for SKYPE for Business server 2019 - although the Download site says Cumulative, it is in fact only a HotFix. The version for this patch is 2046.116 To find your current patch level run this command on a SFB server get-csserverpatchversion The HotFix is targeted at 2 very
- [Tech Posters for YOUR wall.](https://www.thomasjuhlolesen.dk/2019/09/tech-posters-for-your-wall.html) - Posters on the wall, generally have 2 purposes. Look goodBe Informational I have a collection in my office, that both serve as reference, but also often end up being conversation starters (nerd alert) as well as plain old decoration. For SKYPE for Business go get the Workloads poster here: https://www.microsoft.com/en-us/download/details.aspx?id=46448&WT.mc_id=rss_alldownloads_all ______________________________________________________________ For Teams logical architecture
- [Office365 Infographic](https://www.thomasjuhlolesen.dk/2017/12/office365-infographic.html) - Kudos to Matt Wade & icansharepoint.com for creating this EPIC Periodic Table, its really usefull for finding your way around the evergrowing bunch of app's included in your 365 subscription. Go check it out at http://periodictableofoffice365.azureedge.net/#/periodictable/da
- [Manage multiple cloud accounts in Chrome](https://www.thomasjuhlolesen.dk/2019/03/manage-multiple-cloud-accounts-in-chrome.html) - The more Office365 tenants you manage, the more the daily browser struggle becomes real. Recently i found a great way to manage this that i want to share. The usual situation, you are logged in to your own tenant in O365 - and now you have to manage a different customer tenant, you go to
- [Troubleshooting EWS issues in LYNC 2013](https://www.thomasjuhlolesen.dk/2015/01/troubleshooting-ews-issues-in-lync-2013.html) - The EWS not implemented error in LYNC - can be a pain to troubleshoot, because it can be caused by many different factors. I will try to give you my experience on troubleshooting this issue. First of it is important to understand how the EWS integration works in LYNC. Lync uses the following DNS-based discovery
- [LYNC 2013 CU5 - August patches.](https://www.thomasjuhlolesen.dk/2014/08/lync-2013-cu5-august-patches.html) - After som confusion about the May 2014 patches being there and gone again, finally the CU5 has been released. And with some major fixes, being the first CU since January.For details on how to install - see below.But first of, here is the list of fixes, with links to the relevant articles.Central Management Server2912334 Event ID
- [Do i need to update my LYNC databases ?](https://www.thomasjuhlolesen.dk/2014/09/do-i-need-to-update-my-lync-databases.html) - After you installed the latest and greatest CU for your LYNC environment - you perhaps wonder, do I need to update my databases ?Did you do it the last time you installed a CU ?Well there is an easy way to find out using built-in cmdlets.To test the centralmanagementdatabase run the followingTest-CsDatabase -CentralManagementDatabaseTo test all
- [LYNC CLS Bug in Sept14 patch](https://www.thomasjuhlolesen.dk/2014/11/lync-cls-bug-in-sept14-patch.html) - The LYNC Server core components patch released in sept. introduced a BUG in the centralized loggin service, where loggin simply could not be started - warious blog post and articles describe several ways on how to workaround and/or remove the patch 5.0.8308.803 http://support2.microsoft.com/kb/2992965BUT finally the issue has been resolved in the most recent core components patch.Known issuesSymptomsAfter
- [LYNC Server 2013 CU10 patches](https://www.thomasjuhlolesen.dk/2015/01/lync-server-2013-cu10-patches.html) - The list of included fixes is short for this one - most important is that the Google chrome browser supportability issue introduced with CU9 is now history.More info on this issue here:“Google Chrome no longer supports Lync Web App” message when you join a Lync meeting by using Google Chrome” – as described in KB3025563And
- [LS Storage Service event 32054](https://www.thomasjuhlolesen.dk/2015/02/ls-storage-service-event-32054.html) - Finally this little 'bugger' has been addressed and fixed by Microsoft.I always find it hard to explain customers when "ERROR" level events are expected, it smells like teen spirit and buggy code. This is one of these expected errors seen is many LYNC environments, due to the fact a lot of customers are still running
- [LS Data MCU error on SfB 2015 after May OS Patch](https://www.thomasjuhlolesen.dk/2017/06/ls-data-mcu-error-on-sfb-2015-after-may.html) - The May 2017 .NET patches introduced a problem in both Skype for Business 2015 and LYNC 2010/ 2013 servers - after the patch the way that .Net handles EKU's in a certificate has changed.The issue you will find is seen in the event viewer at both all frontends, and on the edge server aswell.Front End
- [Secure your Skype/ LYNC meetings](https://www.thomasjuhlolesen.dk/2019/04/secure-your-skype-lync-meetings.html) - SKYPE for Business and LYNC servers have recently been the target of "attacks" er exploits rather where the attacker would join a non expired meeting and from use the dialout feature to make thousands of calls - resulting in gigantic bills from the telco.What happens is that attackers findThe most prominent source for attacks are
- [Getting error while redeploying Cloud Connector Edition - CredSSP](https://www.thomasjuhlolesen.dk/2018/07/getting-error-while-redeploying-cloud.html) - Recently i ran into this at 2 different customers - both having the exact same issue, and the workaround below solved it.Let me describe the issue.IF your CCE host OS is set to Windows Updates enabled (it should be) but your tenant is not configured with bits and OS updates, or your guest VM's for
- [CU1 for SKYPE for Business server 2015 has been released](https://www.thomasjuhlolesen.dk/2015/06/cu1-for-skype-for-business-server-2015.html) - The first update for SKYPE for Business server has now been released.No big news, however af few fixes.Version is 6.0.9319.45 for this CU.As all of you presumably are running RTM code, no need to check for installed version, but for future reference this is done by running this in powershell:Get-WmiObject –query ‘select * from win32_product’ |
- [Call Transfer Bug i LYNC/ SKYPE4b 4727.1001](https://www.thomasjuhlolesen.dk/2015/07/call-transfer-bug-i-lync-skype4b.html) - Recently i discovered a bug at a client site, and replicated it in my lab - and it seems to be consistent.Sorry about some of my dumps being in Danish, i did not change language when recreating the error - and prioritized this article over language in the dumps. :)When you use the "Team Call
- [How to autohide the "Call Monitor" in SKYPE for Business](https://www.thomasjuhlolesen.dk/2015/07/how-to-autohide-call-monitor-in-skype.html) - A fantastic new feature in my opinion - however still some customers wishes to disable it.Quote MS:"Skype for Business 2015 introduced the Call Monitor, which is a window that will be shown, if the main conversation window becomes hidden by other windows. From the Call Monitor you can mute or end the call and in
- [Smart setup - not so smart afterall.](https://www.thomasjuhlolesen.dk/2015/07/smart-setup-not-so-smart-afterall.html) - UPDATE - UPDATEThis Feature works now - just tested it wit ha fresh ISO - and tadaa.. the setup process is doing a "patching" step.NICEAfter deploying the first dozen of SKYPE for Business customers mostly Upgrades, but also a couple of greenfields - approximately the last half of them being done POST CU1 release -
- [BSOD on Skype for Business server in-place](https://www.thomasjuhlolesen.dk/2015/08/bsod-on-skype-for-business-server-in.html) - BSOD can possibly occure after inplace upgrade from LYNC 2013 server to SKYPE for Business server - when the following is true:OS is 2012 or 2012R2Server has or had Antivirus product installed that utilizes a TDI Filter driverInplace upgrade is performed from LYNC 2013 Server to SKYPE for business server 2015BSOD giving Stop Error 0xD1
- [Modify Numbers in SKYPE4B contactcard without absconfig.exe](https://www.thomasjuhlolesen.dk/2015/09/modify-numbers-in-skype4b-contsctcard.html) - I recently came across a customer with the need to modify which attributes are sync'ed from AD into the contactcards i SKYPE for Business. However the absconfig.exe (part of ressourcekit) is not yet supported for Skype for Business server 2015 - so what to do ?Let me walk you through an example of how to
- [SKYPE for Business - RGS Reports - BUG](https://www.thomasjuhlolesen.dk/2015/11/skype-for-business-rgs-reports-bug.html) - I have recently seen this issue at 2 different customer sites - both with back-end SQL - (Formerly known as Enterprise Edition)One was inplace upgraded the other one migrated to a clean installed Skype for Busines side-by-side poolThe Response Group usage report is failing - it is trying for a very long time until finally
- [SKYPE For Business - UI BUG - Text size.](https://www.thomasjuhlolesen.dk/2015/09/skype-for-business-ui-bug-text-size.html) - Greetings.Today i discovered a rather funky "bug" in the Skype for Business client.When the following is true:Operating System is: Windows 7 (32- or 64-bit)Office is 2013Windows Update KB3054791 is installed (included in June 2015 Windows Update)And a user changes the text size in screen preferences to 125%When the user then makes a call transfer -
- [Dec15 SfB Client Security patch](https://www.thomasjuhlolesen.dk/2015/12/dec15-sfb-client-security-patch.html) - Microsoft has released a Security patch - also including non security related elements - meaning 2 new featuresThe bulletin can be seen here:https://support.microsoft.com/en-us/kb/3114351The patch contains a list of bugfixes - amongst them one to fix the annoying bug where it is impossible to paste content copyed from IE .. NICELync client doesn't show all the fonts
- [March 2016 CU for SKYPE for Business Server released](https://www.thomasjuhlolesen.dk/2016/03/march-2016-cu-for-skype-for-business.html) - Microsoft has just released a Cumulative Update for SKYPE for Business server 2015.Included are general improvements and fixes. The most present fix is the issue where some user could not join meetings from EDGE browser when using the Web app - described here: http://support.microsoft.com/en-us/kb/3095143Updates included in this CU3134266 March 2016 cumulative update 6.0.9319.235 for Skype for
- [Security patch for SKYPE for Business / LYNC Client released April 12.](https://www.thomasjuhlolesen.dk/2016/04/security-patch-for-skype-for-business.html) - Microsoft has released a security patch for both the Lync client and the SfB client - patching a vulnerability that could allow remote code execution.Links for MS articles:MS16-039: Description of the security update for Lync 2013 (Skype for Business): April 12, 2016 (KB3114944)MS16-039: Description of the security update for Skype for Business 2016: April 12,
- [Updates released for SKYPE For Business 2016 client](https://www.thomasjuhlolesen.dk/2016/06/updates-released-for-skype-for-business.html) - On Tuesday a bunch of updates were released for the SFB client, among them a couple of very anticipated ones.Especially the return of the dreaded "Missed Call notifications" bug has been a problem at several customer sites recently - so g'day to you Mr Patch :)KB for this update is KB3115087 Direct Link: https://support.microsoft.com/en-us/kb/3115087The list of
- [Busy on Busy for SFB  - get started](https://www.thomasjuhlolesen.dk/2016/06/busy-on-busy-for-sfb-get-started.html) - YAY - finally Busy on busy is here.In this article I will describe how to enable this new feature after installing the update.Busy Options, is a new Voice policy in SfB 2015, it brings "Busy on Busy" and "Voicemail on Busy" functionality to SfB 2015, AND is even supported on SBA.On top of that Video based screen
- [Simple URL's give 404 on SKYPE for Business](https://www.thomasjuhlolesen.dk/2016/08/simple-urls-give-404-on-skype-for.html) - Worked together with a customer today to troubleshoot a brand new deployed SKYPE for Business pool, with malfunctioning Simple URL's. Basically all simple URL's were defunct, both internally and via the reverse proxy, https://dialin.sipdomain.com gave 403 access denied, and all URL's with directiry name like https://meet.sipdomain.com/init or even https://ext-web.sipdomain.com/cscp all returned "Server Error" 404 errors.After
- [PSTN Calls from mobile - wrong "from" header in hybrid voice](https://www.thomasjuhlolesen.dk/2016/07/pstn-calls-from-mobile-wrong-from.html) - I recently discovered a minor issue at a customer site with Cloud Connector Edition deployed connecting SKYPE for Business online in Office365 to onprem PSTN (SIP Trunk)The issue has been replicated and confirmed by Office365 engineer team - there is at the moment no solid workaround - but issue is being looked in to.The problem
- [Not-So-Busy on Busy](https://www.thomasjuhlolesen.dk/2017/01/not-so-busy-on-busy.html) - If you are familiar with the new SKYPE for Business feature BusyOnBusy introduced in CU2 in 2016 - you are perhaps also using this great little feature - then there is a small thing to make a note of.If you either plan to or already is running your mailbox from Office365 - then please note
- [The CSAddressBook Guide](https://www.thomasjuhlolesen.dk/2017/02/the-csaddressbook-guide.html) - Hi ! :)I wery often get the question - "We updated this or that in AD - but our clients are not reflecting changes" or worse, clients are reflecting both old and updated info.So i decided to do this guide on how to get on top of things on the SKYPE for Business/ LYNC address
- [CallerID control in Office365 CloudPBX](https://www.thomasjuhlolesen.dk/2017/04/callerid-control-in-office365-cloudpbx.html) - When using CloudPBX with PSTN Calling, you are able to control the number that is shown when a user is dialing out - when the PSTN Calling feature was in preview this was done with CsCallerIDPolicy's but they have been deprecated, and a shiny new set of CMD-LET's have been introduced in order to control
- [May 2017 patches for SKYPE for Business server](https://www.thomasjuhlolesen.dk/2017/05/may-2017-patches-for-skype-for-business.html) - A Cumulative update has been released today for SKYPE for Business servers.And finally full support for "Server 2016" is here.This CU contains ALOT of fixes for both minor issues and major annoyances like The VoicemailonBusy limitation when running exchange online. And also another MAJOR improvement is the simplified Meeting Join experience. Se lets get to
- [Manage Response Groups in Powershell](https://www.thomasjuhlolesen.dk/2017/05/manage-response-groups-in-powershell.html) - When managing Response Groups in SKYPE for Business, the tool needed is the Classic "Manage or edit Workflows" Website - very often customers ask if they can control these options by powershell, or even automate some actions.This is indeed possible, the powershell way may seem a bit wrinkled - but it works. :)I will describe
- [Manage Tenant Dialplans in Microsoft Phone System (Denmark)](https://www.thomasjuhlolesen.dk/2018/06/manage-tenant-dialplans-in-microsoft.html) - Ever since OCS/ LYNC server became Voice enabled we had the option to work with Normalization Rules - Normalization Rules is a way to enable users to maintain their existing dialing patterns, this could be 4 Digit shortnumbers within an organization, or simply the ability to type 8-digit numbers and see them "normalize" within the
- [Answer AA and Call queues from Teams](https://www.thomasjuhlolesen.dk/2018/10/answer-aa-and-call-queues-from-teams.html) - Call Queues and Auto Attendants has now gone GA for Teams use.This is a big thing, enabling the Teams users to be a part of the already created Call queues and Auto attendants for the customer.An important prerequisite is that you have already gone through Interop and Upgrade configuration.https://docs.microsoft.com/en-us/MicrosoftTeams/migration-interop-guidance-for-teams-with-skypeAs users are used to in SFBO,
- [Skype for Business server CU9 Released](https://www.thomasjuhlolesen.dk/2019/05/skype-for-business-server-cu9-released.html) - Hello reader :)A new cumulative patch has been released for SKYPE for Business server 2015.Version number for Core components is 6.0.9319.548To find your current patch level run this command on a SFB serverget-csserverpatchversionTo download the CU go to: https://support.microsoft.com/en-us/kb/3061064Again there is a pretty long list of bugs and issues both UCMA and UCWA bugs, aswell as a
- [SFB Server 2015 CU10 (July 2019) released](https://www.thomasjuhlolesen.dk/2019/08/sfb-server-2015-cu10-july-2019-released.html) - Hello Folks :) 31/8 the latest and greatest pack of fixes for SKYPE for Business server 2015 was released. Almost every single role is targeted with fixes and updates in this CU Skype for Business Server 2015 - Standard Edition server Skype for Business Server 2015 - Enterprise Edition - front-end server and back-end server
- [Bypass prerequisite KB's on SFB2015](https://www.thomasjuhlolesen.dk/2017/11/bypass-prerequisite-kbs-on-sfb2015.html) - Hi all.Yes i know the subject sounds a bit - well - tricky - however, recently I came to work with a customer that had updated their topology and thus were running the bootstrapper which failed, so something had to be done - for some strange reason the OS patchlevel somehow must have been modified
- [March CU for SKYPE for Business server released](https://www.thomasjuhlolesen.dk/2018/03/march-cu-for-skype-for-business-server.html) - Howdy Folks - and happy Easter.A new cumulative patch has been released for SKYPE for Business server 2015.Version number for Core components is 6.0.9319.516To find your current patch level run this command on a SFB serverGet-WmiObject –query ‘select * from win32_product’ | where {$_.name –like “*SKYPE for business*”} | ft Name, Version –AutoSizeThis Microsoft decided
- [Updated requirement for SKYPE4B Hybrid](https://www.thomasjuhlolesen.dk/2018/05/updated-requirement-for-skype4b-hybrid.html) - On more than one occasion, when doing a Hybrid SKYPE for Business implementation, i have come across the need to do an, until now, undocumented DNS configuration.Up until now i only saw this need in splitbrain DNS environments.The end result being one-way presence - so internal users had no presence for neither federated, nor online
- [Skype For Business server January CU released](https://www.thomasjuhlolesen.dk/2019/01/skype-for-business-server-january-cu.html) - Hello Folks :)A new cumulative patch has been released for SKYPE for Business server 2015.Version number for Core components is 6.0.9319.537To find your current patch level run this command on a SFB serverget-csserverpatchversion(Yes i am aware that this lab server needs CU's :))This patch contains a very long list of fixes in alot of different
- [Bye Bye SFBOnline part 2](https://www.thomasjuhlolesen.dk/2018/11/bye-bye-sfbonline-part-2.html) - At Ignite this year it was announced that automatic Teams upgrades will begin November 1. 2018 for SFBOnline organisations (without enterprise voice)Microsoft has already started offering automatic updates from Skype for Business Online to Microsoft Teams for their direct customers. Starting from November 1. 2018, Microsoft will extend this offer to partner-associated customers, administrators will be given advanced
- [Go Hybrid SFB.. the sooner the better.](https://www.thomasjuhlolesen.dk/2019/03/go-hybrid-sfb-sooner-better.html) - The success of Teams is showing at the moment, and basically there are 2 types of customers, One type that got into the groove early and got Teams covered in terms of policies, governance, usage and obviously Interop with SKYPE for Business. And what we see a lot, another one where Teams usage just starts
- [Cloud Connector Edition and HTTP Proxy issue.](https://www.thomasjuhlolesen.dk/2019/01/cloud-connector-edition-and-http-proxy.html) - Hi all.I recently came across an CCE problem for the first time, and hopefully this info can help others that may end up in the same situation.Some customers are required, for compliance reasons, to run the Cloud connector behind a HTTP proxy. This is well documented in the Design and Planning whitepapers - so far
- [Bye Bye SFBO](https://www.thomasjuhlolesen.dk/2018/10/bye-bye-sfbo.html) - From the beginning of Time (When Teams was launched) we all patiently awaited the day where MS would announce feature parity - and when they finally did - i guess the recent announcement at MS Ignite last week was no big surprise after all.And we all knew that eventually Teams would replace SFBO - and
- [December 16 Client patches SFB](https://www.thomasjuhlolesen.dk/2016/12/december-16-client-patches-sfb.html) - Hi and Almost merry Christimas :)This client patch is litteraly packed with fixes - it updates the Office 2013-based Lync/SfB client from 15.0.4875.1001 to 15.0.4885.1000Download is available here:The update is available for download from the Microsoft Download Center.32-bitDownload the 32-bit Lync update package now.64-bitDownload the 64-bit Lync update package now.Which fixes are included.This update fixes
- [November 2016 CU released for SKYPE for Business Server.](https://www.thomasjuhlolesen.dk/2016/11/november-2016-cu-released-for-skype-for.html) - Dear Readers.Today (7/11-2016) Microsoft has released a cumulative update package for SKYPE for Business Server 2015.To find your current patch level run this command on a SFB serverGet-WmiObject –query ‘select * from win32_product’ | where {$_.name –like “*SKYPE for business*”} | ft Name, Version –AutoSizeVersionnumber for this CU is 6.0.9319.272One new feature has been added -
- [SKYPE for Business - custom shortcuts](https://www.thomasjuhlolesen.dk/2016/08/skype-for-business-custom-shortcuts.html) - Hello - ever wondered who on earth chose that the keyboard shortcut used for bringing SKYPE for Business client in focus was changed from WIN+Y - to the "Octopus" version CTRL+ALT+SHIFT+3 - well i did.And since nobody made it possible to customize this i wrote up this little guide on how to customize this across
- [Common powershell onliners for Skype4B](https://www.thomasjuhlolesen.dk/2016/08/common-powershell-onliners-for-skype4b.html) - Wery often my customers ask for my little list of usefull powershell commands, and one-liners for basic and common administrative tasks when managing SKYPE for Business.I always urge the admins to move to powershell, but often hear the argument that commands are forgotten and they get the syntax wrong because they do not use it
- [LYNC Server 2013 Cumulativ update released 5.0.8308.949](https://www.thomasjuhlolesen.dk/2016/04/lync-server-2013-cumulativ-update.html) - Microsoft has released a Cumulativ update package for 5 different components in LYNC Server 2013Version number for this CU is5.0.8308.949The Patches are:April 2016 cumulative update 5.0.8308.949 for Lync Server 2013, Core Components April 2016 cumulative update 5.0.8308.949 for the Lync Server 2013 Response Group serviceApril 2016 cumulative update 5.0.8308.949 for Lync Server 2013, Front End
- [Hybrid Voice with CCE - Cloud Connector Edition](https://www.thomasjuhlolesen.dk/2016/02/hybrid-voice-with-cce-cloud-connector.html) - Hybrid Voice is BACKUPDATED 10/4 - The Bits are here - yes to CCE download is live on this link:https://www.microsoft.com/en-us/download/details.aspx?id=51693Installs alot of new powershell CMDlets, and the config files for CCE - download of the server bits is in progress... more to come on this :)/Thomas.Original Post:Happy Days - HYBRID Voice is back and Welcome
- [BUG-FIX for missing "Missed Call Notifications"](https://www.thomasjuhlolesen.dk/2016/02/bug-fix-for-missing-missed-call.html) - Yesterday a new patch was released, fixing the issues introduced in Nov15 where - if you have not deployed Exchange UM - you would no longer get missed call notifications in your Outlook inbox.See this post for info the issue:http://lyncvoice.blogspot.dk/2016/01/dec15-patch-causes-missed-call.htmlNow the issues is adressed in this KB:KB 3136400 No missed call notification generated in Lync
- [Dec15 Patch causes Missed Call notifications to malfunction](https://www.thomasjuhlolesen.dk/2016/01/dec15-patch-causes-missed-call.html) - Dec. 8. a security patch for LYNC / Skype for Business was released.Initially MS released a KB about this patch causing video to stop working when recording meetings.https://support.microsoft.com/en-us/kb/3128747But it seems this patch also introduced another problem - i have now seen this at a handfull of customer sites - so not all are impacted.Issue that
- [New Years patch for LYNC Server 2013](https://www.thomasjuhlolesen.dk/2016/01/new-years-patch-for-lync-server-2013.html) - Happy New Year :) - 2016 kicks off with an early patch - for the issue where iOS devices could not join meetings from their device from outside the LYNC app.Described in this KB:https://support.microsoft.com/en-us/kb/3126487At the same time a cumulative pathc for LYNC Server core components has been released with a long list of minor fixes
- [Speaking @ Colabora UC user group event in DK](https://www.thomasjuhlolesen.dk/2015/06/speaking-colabora-uc-user-group-event.html) - On the 24. June I will be giving a presentation on the SKYPE for Business upgrade process at the first Colabora event this year - we hope to see a lot of attendees. Please note that presentation will be given in Danish.Here is the program for the day where 3 great colleagues of mine also
- [SKYPE for Business upgrade report](https://www.thomasjuhlolesen.dk/2015/05/skype-for-business-upgrade-report.html) - Hello - and thanks for stopping byLast week at Ignite in Chicago I attended the excellent session by Scott Stubbersfield, where he did the TV-kitchen version af a LYNC > SKYPE migration - meaning that the servers were precooked, in order to do the session in 75 minutes. Thats great - and we all knew
- [Get Ready for SKYPE for business patch.](https://www.thomasjuhlolesen.dk/2015/04/get-ready-for-skype-for-business-patch.html) - This coming patch Tuesday the 14. April things will start to change for your LYNC users - se better come prepared :)Microsoft will release an Office 2013 patch that will enable the SKYPE for business UI as default - this is whether you are running LYNC 2013 or SKYPE for business server. I really like
- [Skype for Business - What to expect](https://www.thomasjuhlolesen.dk/2015/03/skype-for-business-what-to-expect.html) - Skype for Business - We salute You :)For the last couple of years, often when I was talking to new customers about LYNC I heard the comment - "Well isn't it just like Skype" When explaining LYNC's place in the infrastructure. And with a serious expression, answering. No No No - and YES.Where LYNC is a
- [LYNC Server 2013 CU7 October 2014 patches](https://www.thomasjuhlolesen.dk/2014/10/lync-server-2013-cu7-october-2014.html) - For details on how to install Build 8308.831 of LYNC Server - see below.But first of, here is the list of fixes, with links to the relevant articles.And YAY - the CLS bug introduced in the Aug patch is finally fixed - thank you for that.Update for Standard or Enterprise Edition server (Front End Servers and
- [Getting rid of those duplicate "Lync contacts" in Outlook](https://www.thomasjuhlolesen.dk/2014/10/getting-rid-of-those-duplicate-lync.html) - (And everywhere else they sync, for that matter) (Updated 19/102015) (Updates 15/2-2019)A lot of customers are experiencing the duplicate contacts issue - the issue itself was fixed in this patch http://support2.microsoft.com/kb/2916650However, patching the LYNC client does not get rid of the duplicate entry's - this has to be done afterwards - and can be a
- [Speaking @ Microsoft Campus Days 2014](https://www.thomasjuhlolesen.dk/2014/09/speaking-microsoft-campus-days-2014.html) - On November the 25. to 27. The Event "Microsoft Campus Days 2014" will take place at Cinemaxx in Copenhagen.Here I will give a presentation on LYNC Advanced troubleshooting tools and techniques - together with my colleague Kent Erichsen.In this session you will get a overview of some of the tools that we as consultants find
- [WSUS 2012 Post deployment task failing](https://www.thomasjuhlolesen.dk/2014/07/wsus-2012-post-deployment-task-failing.html) - After installing Windows Server Update Services Role on a Server 2012. When trying to launch the post deployment tasks from Server Manager, you will find that this fails.Also if you are trying to deploy the role from PowerShell.When digging into this issue I found that the post deployment tasks looks for a file called UpdateServices-Services.xml located in
- [Change Vnet/ Region on VM in Azure - no problem](https://www.thomasjuhlolesen.dk/2014/05/change-vnet-region-on-vm-i-azure-no.html) - Sometimes you find yourself in a situation, where you need to change the assigned Region or Vnet on a VM in Azure. There is a very simple and fast way of achieving this.By deleting the server, and assigning the same virtual disk to a new VM connected to the correct Vnet.Go to the Virtual Machine
- [Audiocodes T301 timer causing 603 Decline on LYNC](https://www.thomasjuhlolesen.dk/2014/05/audiocodes-t301-timer-causing-timeout.html) - I Recently had a strange issue on a customer site, customer reported they suddenly could not call some clients in Austria. And after digging into the problem we found that also som areas of Sweden and also Italy was impossible to dial via PSTN.The customers LYNC 2010 server was connected to PSTN via and Audiocodes

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- [exchange](https://www.thomasjuhlolesen.dk/tag/exchange)
- [o365](https://www.thomasjuhlolesen.dk/tag/o365)
- [licensing](https://www.thomasjuhlolesen.dk/tag/licensing)
- [dmarc](https://www.thomasjuhlolesen.dk/tag/dmarc)
- [email](https://www.thomasjuhlolesen.dk/tag/email)
- [security](https://www.thomasjuhlolesen.dk/tag/security)
- [Purview](https://www.thomasjuhlolesen.dk/tag/purview)
- [CoPilot](https://www.thomasjuhlolesen.dk/tag/copilot)
- [Emailsecurity](https://www.thomasjuhlolesen.dk/tag/emailsecurity)
- [Purview message encryption](https://www.thomasjuhlolesen.dk/tag/purview-message-encryption)
- [Admin Notifications](https://www.thomasjuhlolesen.dk/tag/admin-notifications)
- [Entra](https://www.thomasjuhlolesen.dk/tag/entra)
- [MFA](https://www.thomasjuhlolesen.dk/tag/mfa)
- [Multifactor](https://www.thomasjuhlolesen.dk/tag/multifactor)
- [SMTP](https://www.thomasjuhlolesen.dk/tag/smtp)
- [AD](https://www.thomasjuhlolesen.dk/tag/ad)
- [Entra ID](https://www.thomasjuhlolesen.dk/tag/entra-id)
- [Recovery](https://www.thomasjuhlolesen.dk/tag/recovery)
- [Backup](https://www.thomasjuhlolesen.dk/tag/backup)

## Series

- [Teams Compliance](https://www.thomasjuhlolesen.dk/series/teamscompliance) - In this series i will drill into how to get started with Purview Information protection inside Microsoft Teams
- [Email encryption](https://www.thomasjuhlolesen.dk/series/email)