Jan 28, 2019 I have two issues. The first is: I have a statement: Microsoft Powerpoint wants to use your confidential information stored in 'Microsoft Identity C5D7D084-0377-4772-8830-07182C05F8D3' in your keychain. To allow this, enter the 'login' keychain password.' I purchased Microsoft Office 2019 Home, Professional and Visio 2019 on the Home Use. After having updated to macOS Catalina, you may get a pop-up window stating “AMPDevicesAgent wants to use your confidential information stored in iOS backup in your keychain” when you backup up your iPhone or iPad. So what is AMPDevicesAgent? Is this something new within macOS Catalina?
After you or your Mac administrator resets the password of your macOS user account, your Mac might ask you to update your keychain password or enter the password of your login keychain. It might also tell you that the system was unable to unlock your login keychain. That's because your login keychain is still using your old password.
If you don't know your old password, the solution is to create a new login keychain.
If you know your old password, use that password to update your existing login keychain: