Warning - KB2984972 and App-V 4 and App-V 5 Packages

Question

The above Security Update went on to all of our W7 PC last night as part of Patch Tuesday and broke a large number of our existing 4.6 Autodesk related packages. AutoCAD itself was not affected but Revit, Navis, DWG TrueView all were. Not got to the bottom
of why yet (the explanation for the update does not sound like it would make any difference) but simply removing the update from client PCs fixes the packages which will do me for now. If you have any control over when security updates go on to your PCs I
advise on checking it out

Answer 1

I want to make everyone aware that this issue has been identified and a workaround documented in the KB below.  It is a good idea to add this registry key proactively in your environments before installing KB 2984972.
Update for RDC 7.1 to support restricted administration logons on Windows 7 and Windows Server 2008 R2
http://support.microsoft.com/kb/2984972
Resolution
To resolve this known issue, configure the TermSrvReadyEvent registry entry on the computer where the Microsoft Application Virtualization Client is installed.
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
For example, type the following command at an elevated command prompt to add the entry to a system 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
For example, type the following command at an elevated command prompt to add the entry to an x86-based system 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
Example
For example, type the following command at an elevated command prompt to add the entry to an x64-based system running Application Virtualization 4.6:
reg add HKLM\SOFTWARE\Wow6432Node\Microsoft\SoftGrid\4.5\SystemGuard\ObjExclusions /v 95 /t REG_SZ /d TermSrvReadyEvent
Thanks for your patience while we researched this issue,
Mark
Mark Stanfill
Senior   Supportability Program Manager
CSS   C+E MSD Supportability
[email protected]