I just bought a used macbook pro and I can't set up my keychain. Messages read "keychain doesn't exist for the device", and then after attempting to reset it, I'm told it doesn't work. It won't even allow me to turn keychain on for my iCloud. I don't really even know the significance of keychain, but I can't log in to use microsoft office without it. Help would be much appreciated!
MacBook Pro 15″, macOS 11.5
Did the seller followed the article What to do before you sell, give away, or trade in your Mac - Apple Support
Whose Apple ID is signed in Mac the seller or its yours Apple ID signed in , the system keychain is corrupted , completely erase the hard drive and reinstall Mac OS Erase and reinstall macOS - Apple Support
Then follow the article Set up your MacBook Pro - Apple Support
Set up iCloud Set up iCloud on your Mac - Apple Support
Sign in with your Apple ID and password with its own credentials Sign in with your Apple ID - Apple Support , if you are not having any Apple ID create new How to create a new Apple ID - Apple Support (IN)
Keychain Setup
