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I am trying to update my Mac Air to the latest Catalina 10.15.5 version. Once I click 'update' it appears to go through the update process for about a minute before it then brings me back to the regular computer log-in page. I enter my password and log in and then an error message saying "An unknown error occurred (-42023)." This keeps happening and the computer won't update. Please help!!
Hi,
Try to download Catalina 10.15.5 updater from following site and install it which could be update your MacBook Air.
https://support.apple.com/kb/DL2039?viewlocale=en_US&locale=en_US
Hi,
Try to download Catalina 10.15.5 updater from following site and install it which could be update your MacBook Air.
https://support.apple.com/kb/DL2039?viewlocale=en_US&locale=en_US
Catalina 10.15.5 update error (-42023)
