SfB Server – Prerequisite installation failed: SqlInstanceRtcLocal

Recently while adding a new Front End Server to the existing Skype for Business Enterprise Pool we got the following message on SfB Deployment Wizard Step 1: Prerequisite installation failed: Prerequisite installation failed: SqlInstanceRtcLocal For more information, check your SQL Server log files. Log files are in the folder C:Program FilesMicrosoft SQL ServerMSSQL*.RtcLocalMSSQLLog, where the *…


Seven free LinkedIn Learning courses on Office 365 for IT pros and admins

If you are relatively new to Office 365 deployment or administration or know someone who is, take a look at the new set of LinkedIn Learning courses at http://aka.ms/365enterprise: Microsoft Cloud: Explore Cloud Services Office 365: Deployment Office 365: Administration Office 365: Manage Identities Using Azure AD Connect Microsoft Cloud Services: Administer Office 365 and…


SfB Server 2015: Event 57005, LS User Store Sync Agent – Could not find stored procedure XdsQueryCriticalDocumentSignatures

While updating our SfB Server 2015 lab, we notice that a recently updated Front End server had multiple errors and warnings in the Event Viewer: Log Name: Lync Server Source: LS User Store Sync Agent Date: 12/09/2017 21:54:33 Event ID: 57005 Task Category: (1061) Level: Error Keywords: Classic User: N/A Computer: sfbfe03.recore.lab Description: Error encountered…

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Exchange Mailbox requirements for MS Teams and Troubleshooting

Exchange Mailbox Location The ideal state is for all Skype Teams users to have their mailboxes homed on Exchange Online. The minimum state for users to use Skype Teams are Exchange mailboxes on-premises with their identities synchronized to Office 365. For these Exchange hybrid customers, note that Meetings, Changing Profile Photo, and Connectors are not available…


SfB Server: Cannot install KB2982006 – This update is not applicable to your computer.

In a previous post we explained how to install the KB2982006: Prerequisite (KB2982006) not satisfied when trying to install Skype for Business Server 2015 https://blogs.technet.microsoft.com/uclobby/2015/07/11/prerequisite-kb2982006-not-satisfied-when-trying-to-install-sfb-server-2015/ However, in a recent deployment with all the Windows Updates installed, including the KB2919442 and KB2919355,  we couldn’t install the KB2982006: We also got the same error in the Event…

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Broken DSC Reporting, RequestEntityTooLarge and some LCM internals

Abtract After migrating a complex DSC configuration using partial configurations to composite resources, DSC reporting using SQL Server as described in Using SQL Server 2016 for a DSC Pull Server did not work any longer or was no longer reliable. This article is about troubleshooting this and learning something about Event ID 4260 and how…


Sunsetting TMG 2010 with some (free!) Best Practices

Long and boring post ahead. So: KITTENS! There. Fluffy now. As one of the Premier Field Engineers performing ISA Server Health Checks and then Threat Management Gateway (TMG) configuration reviews (by default, from my long association with Proxy 2.0 and then ISA), I was reviewing a document I put together for a customer just before…


Troubleshooting Distributed Cache for SharePoint 2016 On Premises

2016 still makes use of the same AppFabric version as 2013, but of course there have been some changes, we added several new caches and we have the new MinRole setup. Original 2013 script (also works on 2016): https://blogs.technet.microsoft.com/filipbosmans/2015/12/07/troubleshooting-distributed-cache-for-sharepoint-2013-on-premise/ All the rules still apply (to my knowledge) as in configuration, best practices and so on, so…


Troubleshooting Distributed Cache for SharePoint 2013 On Premise

Here is a script that will give you a good starting point for troubleshooting Distributed Cache for SharePoint 2013 On Premises. Make sure to save it as a .ps1 file and run the script (Administrator) on a running Cache Host like “PS C:> .DistributedCacheScript.ps1”, or right click “Run with PowerShell” as it will simply not work with copy…