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Lync Connectivity Analyzer fails to open

I came across an issue where a fresh install of the Lync Connectivity Analyzer (http://technet.microsoft.com/en-us/library/jj907302.aspx) on Server 2012 wouldn’t launch. Looking in the Event Viewer I found the following errors.

Event: ID 1026
Source .Net Runtime
Application: LyncConnectivityAnalyzer.exe
Framework Version: v4.0.30319
Description: The process was terminated due to an unhandled exception.
Exception Info: System.InvalidOperationException

Event: ID 1000
Source: Application Error
Faulting application name: LyncConnectivityAnalyzer.exe, version: 5.0.8308.289, time stamp: 0x5113842c
Faulting module name: KERNELBASE.dll, version: 6.2.9200.16451, time stamp: 0x50988aa6
Exception code: 0xe0434352

I tried the Lync Connectivity Analyzer on my Windows 8 desktop (known to be working) and had the same issue.

System Requirements for the Lync Connectivity Analyzer
•Windows 7 Service Pack 1, Windows 8, Windows Server 2008 R2 SP1, Windows Server 2008 Service Pack 2, Windows Server 2012, Windows Vista Service Pack 2
•Microsoft .NET Framework 4.5

This led me to believe a patch for .NET 4.5 might be the cause. After removing the July patches KB2840632 & KB2833958, I was able to launch the Analyzer again. Another user reported that just removing KB2840632 will resolve the issue.

Details of the KB2840632 Security Update: http://support.microsoft.com/kb/2840632

Updated Lync Connectivity Analyzer: http://blogs.technet.com/b/nexthop/archive/2014/01/21/announcing-the-release-of-the-updated-lync-connectivity-analyzer.aspx

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7 responses to “Lync Connectivity Analyzer fails to open

  1. BJG August 30, 2013 at 7:58 am

    On Windows 7 remove KB284064 & KB2840642V2

  2. Pal November 26, 2013 at 9:22 pm

    Not working Windows 2012

  3. Mornay January 14, 2014 at 3:09 am

    This didn’t work on Win7 or Win8 as I don’t have either of these updates installed.

  4. Pingback: LyncDiscover and Auto Discovery Deeper Dive | Lync Exchange - UC Blog

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