Backups have been successful for many months, but the last 10 days have failed. I checked the event viewer (screenshot attached) but no way to tell why. I can see the drive in disk management (although it has no drive letter, so I assume Windows Backup formats the drive).
We rotate external USB drives, and the ones I've tried so far have the same result. Is there a detailed list of troubleshooting items to check? What do I check next to solve this?
Looking at the early failures, I see "Backup target is running low on free space". I'm thinking I have some huge log files somewhere and need to determine how to clear them.