OS Monterey Appstore.app shows blank screen
Just upgraded to OS Monterey.. find the App Store.app opens but with blank screen.
Have new item 'App Store' item under Apple System Preferences that does not appear to do anything.
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Install this Monterey Combo Update over your current Monterey installation.
macOS 10.15.7 Supplemental Combo Update
It may repair the App Store issue.
There is no System Pref for the App Store in Monterey.
M1 Mac mini, macOS 12.2.1; Watch, series 5 GPS/cellular, watchOS 8.4.2; iPad Pro 2nd Gen, iPadOS 15.3.1; iPhone 12 Pro, iOS 15.3.1; TV 4th Gen, tvOS 15.3; HomePods, audioOS 15.3 and Airport Express w/ Airplay 2