You might experience this when you install MSI packages on your RDS/Terminal and XenApp servers.
The installation will hang and display the message:
Please wait while the application is preparing for the first use
I have seen this with the following software packages:
- Google Chrome (Enterprise)
- IBM i Access
One way to avoid this issue is to create and set the following dword value to 0:
HKEY_LOCAL_MACHINESoftwarePoliciesMicrosoftWindows NTTerminal ServicesTSAppSrvTSMSIEnable
During deployment with MDT 2012 or SCCM 2012 one way to do this is to add it in your task sequence:
You can find more information in this link