Black Window when starting a Citrix Application?

This is something we have seen when a user have several Displays, and the Scaling is set different, like 125% on one screen and 100% on another. Quick fix is to set all Displays to the same Scaling. A better approach is to fins the Citrix Receiver exe file, wfcrun32.exe, normally in C:\Program Files (x86)\Citrix\ICA Client, right clisk and Select Properties, Select Compability and tick the option: Disable display scaling on high DPI settings