Catalina upgrade nightmare. Downgrade back to Mohave?

Joined
Aug 4, 2007
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Your Mac's Specs
MacOS Sonoma
For the App Store to work you need A) Internet connection, b) An Apple account, c) Payment card to buy apps.

Also, I would consider deleting any old preferences/settings for the App Store from your ~\Library\Preferences and possibly Application Support folders which may cause a malfunctioning app.
 

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