Why do I have a blank "window" on startup.
When my Mac Pro running the latest version of Catalina, now Big Sur, starts up, I have a blank gray window with the title "Window." Any ideas what is happening or how to get rid of it?
Mac Pro, macOS 11.0
User profile for user:
Chris_D13
User level:
Community Specialist
Greetings DSimon21,
Thanks for visiting the Apple Support Communities! It seems you have a blank window that appears when logging into your macOS user account.
Temporarily remove the login items that start when you log into your macOS account:
Open items automatically when you log in on Mac - Apple Support
If the behavior persists, test while your Mac is started in safe mode:
Start up your Mac in safe mode - Apple Support
Kind regards.