10.15.1 won't install
Tried installing the new update 10.15.1 but it won't. Have to go back to 10.15.
Any Particular reason why?
iMac 27" 5K, macOS 10.15
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Try the following three things:
- If not already, try connecting your iMac to your network by Ethernet, and then, try installing the upgrade again.
- Create a new user account. Log out of your existing account, and then, log in with the new account. Try upgrading again.
- Finally, if neither of the above work, boot up your Mac in Safe Mode. Then try the upgrade again. Ref: Use safe mode to isolate issues with your Mac - Apple Support