Receiver didn't send out ICA connection request to the VDA after getting Launch.ica file. Got error "Unknow client error 1110" after 3 or more minutes.
Article ID: CTX289600
Updated On:
Description
When try to launch desktop, we find ICA file can be downloaded successfully, but CD Viewer doesn't pop up or sometimes CD Viewer can pop up 3 minutes later but show unknown client error 1110 immediately. The only solution is to reset the user profile in the client. (The issue is related to specific clients and Receiver reinstallation cannot solve the issue).
Resolution
Per the test, CWA for windows 1912.6000 can launch the desktop without any issue. Please upgrade receiver to 1912.6000 to solve the issue.
Problem Cause
We identified that Receiver didn't send ICA connection request to VDA after getting launch.ica file.
And further process monitor trace showed that CDViewer.exe was stuck when try to access the configured wallpaper for current user. 
CD viewer need to use this wallpaper to display home button in the toolbar later. But the network path for the wallpaper cannot be accessed at that time. So it leads everything is stuck at here.
