Big Sur - Time Machine Backup Failing to External Drive
I recently replaced my iMac a the previous one finally died.
There is an external drive on the iMac that Time Machine will back up to with no problems.
I also have a Macbook that I was previously able to backup to an external drive on the iMac.
This is now failing with the Time Machine unable to authenticate to the server.
I have set up sharing on the iMac and given both specific user and guest access with read-write, enabled the drive for Time Machine backup, but continue to get the same error.
Has anyone been able to get this to work since the Big Sur upgrade