Applying a hotfix should be easy as pie. But I got many questions about the latest hotfixes for App-V Client 5.0 SP2 (HF4 and HF5 at time of writing).
Take for example Hotfix Package 5 for Microsoft Application Virtualization 5.0 Service Pack 2. This one’s filename is “appv_client_setup_patch.exe”. After downloading most of the people double click the installer and are presented with this error message:
Setup failed while scanning the system for prerequisites. This update only applies to App-V client version: 5.0.3361.0″. The App-C client is not present on this computer.
While App-V Client 5.0.3361.0 (= 5.0 SP2) is present on the machine!
You need to extract the above sources with the /Layout parameter, and run the MSP according to your OS architecture (x86/x64) afterwards.
appv_client_setup_patch.exe /Layout /LayoutDir=c:\temp
The .MSP’s can be applied with MSIEXEC and the /P parameter.