Turn off this feature in Preview!
This March 2020 version of Desktop was not showing the Windows frame for us - no top bar to grab and move, no icons for minimize, maximize, close. We finally found that turning off Preview made the new version functional (but we have had only minimal use so far).
I had tried rolling back to a couple of previous versions, including February release. None of those would even open. Trying to open gave me a brief busy cursor, and no PBI process running in the end.
Note for the roll back, I tried two different earlier versions and uninstalling the software before install. Also tried reboot after uninstall. In all cases, I got this error when trying to "Launch" from the "Completed" install dialog box:
"The installer has encoutered an unexpected error installing this package. This may indicate a problem with this package. The error code is 2753."
Note I had used these exact same installer files previously for install with no issues.
I did the research on the 2753 and tried the many fixes, none worked, including the services and the DLL fixes.