
Special note for users who are running macOS Mohave: There was a security update in September 2020 which is known to be buggy.


Mac App Store Displays Blank White Screen.The suggestions are, roughly, arranged so that the top suggestions are most likely to solve your issue and/or are easiest to implement. In this article, we give a list of things you can try in order to solve this issue. See Also: Mac App Store: An Error Occurred During Purchase, Fix You may also receive various error messages when you attempt to update your apps on your Mac.

Although the update information for the app shows in the App Store, when the update button is clicked, the app does not get updated and the app update still shows in the App Store. Some users have reported an issue where the Mac App Store will no longer update their apps.
