Time Machine Backup Errors

[Zothecula]

I have a friend who asked me to find out why his mac will not backup using time machine anymore. Here is the problem:

Time machine was running fine for a long time and then all of a sudden the other day he noticed it quit backing up and is now getting an error saying his password is not correct and his backups are no longer running.

I need to get his backups going for him again but have racked my brain and cannot understand why time machine would be asking for a password. I plan on going over there next week and trying to fix it for him, any ideas what this error is or what I could try to get him backing up again?

Thx in advance.

 

[Weaselboy]

Could he have turned on TM encryption? That would require a PW.

Sometimes TM backups just get corrupted and the best thing is to erase the disk and start over.

 

[Zothecula]

Could he have turned on TM encryption? That would require a PW.

Sometimes TM backups just get corrupted and the best thing is to erase the disk and start over.

Good point on that one, had never even thought about that, I will check for that when I get there next week, thanks for your input.