Windows 2008 R2 SP1 Enterprise is getting Event ID 33 SideBySide errors after July updates


  • I have applied the July updates to my server, a Windows 2008 R2 SP1 Enterprise server.

    Now my event log is filling up with Event ID 33 SideBySide Application errors.

    Everything was fine until the update.

    How can I resolve this?

    Thursday, July 14, 2011 5:27 PM


  • This is a known issue and is documented in  You can safely ignore this, however, if needed you can work around this by applying one of the two below, although there are caveats –

    1.      Apply KB977648, but please note that this would put the system on the QFE branch for this component, which means the system would be on the Hotfix branch and not the General Release branch.

    2.      Apply Service Pack 1, clearly deploying an SP has bigger implications.

    Tuesday, July 19, 2011 4:24 PM

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