Is the App Store available?
Check Apple's System Status page to find out if the App Store is temporarily unavailable in your country or region.
Manually update the app
Open the App Store and update the app manually.
Find out what to do if a message says that you can't connect to the App Store.
Are you signed in with the correct Apple ID?
If you have more than one Apple ID, make sure that you're signed in with the correct Apple ID.
Do you have a valid payment method on file?
You may need to have a payment method on file, even if the app that you want to download is free. Check the payment method you have on file and make sure that it hasn't expired, declined or failed.
If you can't update apps and a message says that "your account is disabled in the App Store", contact Apple Support.
Restart your Mac
Restart your Mac. Then check whether you can download or update apps.
If you still can't download or update apps on your Mac, contact Apple Support.