App Store and apps not working

camilla42 wrote:

Hello, I just updated my macbook pro 2017, from Sierra to Catalina macOs. but when the computer restarted the App Store didn't open, and I tried to force the program to close, but it's still not working. and all the apps don't open either. what should I do?

thanks, camilla.

If you can't connect to the App Store, iTunes Store, or other ...

To trouble shoot further you can:

—Try a SafeBoot https://support.apple.com/en-us/HT201262

Takes noticeable longer to get to the login screen, does a 5-15 minute disk repair before it fully boots up, and certain system caches get cleared and rebuilt, including dynamic loader cache, etc. Login and test. Reboot and test as caches get rebuilt.

In Safe mode third party system modifications and system accelerations are disabled, it removes malware, etc hampering smooth operation, however a reboot will put it back to normal mode.

This test will tell you if third party interference; extensions etc are not loaded in safe boot mode.