App or Desktop disappears immediately after launch and session is left in Disconnected State on Studio and the VDA
-Under HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon registry key make sure there is only one cmstart.exe value specified in AppSetup. If multiple values of cmstart.exe are present, remove them.
-Reboot VDA
If AppSetup value does not exist, please create new String Value:
Type: REG_SZ
Value Name: AppSetup
Value Data: UsrLogon.cmd,cmstart.exe
Under the registry HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon, AppSetup has multiple cmstart.exe values.