How to reboot your Lync/SfB Servers without breaking the Quorum.

More than once the situation when I’m asked how we should really reboot a server in a pool minimizing the impact for the end users, and not breaking the Server Quorum, Fabric Service and Routing Groups currently in use. Before proceeding, it’s important to always take in consideration our Technet Article about High Availability. There, you… Read more

Lync/SfB: Quickly access the Certificate Store

In a previous post we wrote about the Checks to do in the Lync/Skype for Business Server Certificate Store, however, sometimes we might also want to manually check it using the Certificate Store MMC. Since Windows Server 2012 and Windows 8 we can quick access the Certificate Store MMC, for Local Computer and Current User, using Command Prompt/PowerShell or the… Read more

Enable Lync 2010 Meeting Invite Template in Lync2013/SfB2015

The January 2017 client update for Lync 2013/SfB2015 includes a new registry key that allows Lync2013/SfB2015 Meeting Addin to create a meeting invite similar to the one in Lync 2010 client. For reference we need to look how Dial in Conferencing Numbers are configured: Get-CsDialInConferencingAccessNumber https://technet.microsoft.com/en-us/library/gg413015.aspx Now, before any change, we can see that a meeting invite for… Read more

The user Accounts in Outlook and SfB do not match error when scheduling a Skype For Business Meeting from Outlook.

Even if there is many information about this error, recently I’ve faced a very interesting situation in an Exchange Hybrid + Skype For Business Environment in which the users were configured with a different Mail Address (SMTP), Skype Address (SIP) and User Principal Name (UPN). The issue: When trying to schedule a meeting on Outlook,… Read more

Lync/SfB: Check client version using PowerShell

During troubleshooting we often need to check the installed version, for Lync/SfB Server we already know how to check the installed version using PowerShell: Skype for Business Server Component Version using Get-CsServerPatchVersion https://blogs.technet.microsoft.com/uclobby/2015/12/08/skype-for-business-server-component-version-using-get-csserverpatchversion/ Skype for Business Server 2015 Component Version using PowerShell https://blogs.technet.microsoft.com/uclobby/2015/05/01/skype-for-business-server-2015-component-version-using-powershell/ Lync Server Component Version using PowerShell (Windows Registry) https://blogs.technet.microsoft.com/uclobby/2014/12/15/lync-server-component-version-using-powershell-windows-registry/ On the client we can check the… Read more

Lync/SfB Server: Stop Front End service in Starting state

Some of the cases we work have the Front End service in a Starting state: In PowerShell the status is StartPending: We cannot stop it on the Services Management Console: We can go to Task Manager and try to manual stop the service: If that doesn’t work we need to Go to Details and End task that is associated with… Read more

Lync/SfB Server: Event 41026, LS Data MCU after May 2017 .NET Framework update

Update 2017/06/28 – In Workaround #1 we also need to request new Front End certificates with Client and Server authentication in the EKU. Recently we notice that Lync Server 2010/2013 and Skype for Business Server 2015 Front Ends were generating the Events 41025 and immediately after the Event 41026: Log Name: Lync Server Source: LS… Read more

Lync/Skype4B Server: OAuthTokenIssuer, Assigned certificate not found or untrusted.

In a recent support case the OAuth certificate was missing in one of the Front Ends: We also notice the Missing message in the Deployment Wizard Step 3, for the OAuth certificate: And in PowerShell we had the following error when we tried to check the certificates: Get-CsCertificate https://technet.microsoft.com/en-us/library/gg398227.aspx Get-CsCertificate : OAuthTokenIssuer: Assigned certificate not found… Read more

Lync Server: Event 41029 LS Data MCU – No connectivity with the Lync Web App

In a recent support case we were working on an issue where sometimes the users couldn’t use the Lync Web App. The troubleshooting started in the Event Viewer > Lync Server, we notice that we had a few errors: Log Name: Lync Server Source: LS Data MCU Date: 01/03/2017 15:00:43 Event ID: 41029 Task Category: (1018) Level:… Read more

Lync/Skype4B Server: Manually update the Edge Server Configuration

In a recent support case we had a case that the customer had some urgency to add a new Allowed Domain to be quickly pushed to his Skype for Business 2015 Edge Servers. However, the replication wasn’t working: Get-CsManagementStoreReplicationStatus | ft -AutoSize https://technet.microsoft.com/en-us/library/gg399052.aspx An easy solution to this is to perform a manual update and… Read more