Microsoft App-V 4.x and 5 applications cannot be started after installation of Microsoft Hotfix KB2984972 or KB3125574

Version 1

    Problem

    After installing Microsoft hotfix KB2984972 or KB3125574, Microsoft App-V applications will not start anymore, only the mini splash screen will stay visible for the end-user.

     

    Cause

    After you install this security update, virtualized applications in Microsoft Application Virtualization (App-V) versions 4.5, 4.6, and 5.0 may experience problems loading.

    For more information see:
    http://support.microsoft.com/kb/2984972
    https://support.microsoft.com/en-us/kb/3125574


     

    Solution

    To solve this issue Add the TermSrvReadyEvent to the registry.

    Information taken from the Microsoft website http://support.microsoft.com/en-us/kb/2984972


    For Microsoft Application Virtualization 5.0:

    Registry Key: HKLM\Software\Microsoft\AppV\Subsystem\ObjExclusions
    Value name: 93 (or any unique value)
    Type: REG_SZ
    Data: TermSrvReadyEvent

    Example:

    Type the following command at an elevated command prompt to add the entry to a system that is running Application Virtualization 5.0:

    reg add HKLM\Software\Microsoft\AppV\Subsystem\ObjExclusions /v 93 /t REG_SZ /d TermSrvReadyEvent


    For Microsoft Application Virtualization 4.6:

    For all supported x86-based systems:

    Registry Key: HKLM\SOFTWARE\Microsoft\SoftGrid\4.5\SystemGuard\ObjExclusions
    Value name: 95 (or any unique value)
    Type: REG_SZ
    Data: TermSrvReadyEvent

    Example:

    Type the following command at an elevated command prompt to add the entry to an x86-based system that is running Application Virtualization 4.6:
     
    reg add HKLM\SOFTWARE\Microsoft\SoftGrid\4.5\SystemGuard\ObjExclusions /v 95 /t REG_SZ /d TermSrvReadyEvent


    For all supported x64-based systems:

    Registry Key: HKLM\SOFTWARE\Wow6432Node\Microsoft\SoftGrid\4.5\SystemGuard\ObjExclusions
    Value name: 95 (or any unique value)
    Type: REG_SZ
    Data: TermSrvReadyEvent


    Workaround:

    Uninstall Microsoft Hotfix KB2984972.

    After removing Microsoft Hotfix KB2984972 from the affected systems, Microsoft App-V applications will start working again.