Time machine backup not working

Please perform the following:

Power off the Time Capsule

Wait a minute

Power the Time Capsule back up and let it run for a few minutes

Hold down the option key on your Mac while you click on the Time Machine "clock" icon at the top of the Mac's screen

Select Verify Backups and run the check

The diagnostic check might take anywhere from 10-60 minutes or more depending on how much data is stored in the backup file on the Time Capsule. Let the process run until it completes....or....until you see an error message appear.

If an error message appears, post back with the exact text of the message.

You can watch the progress of the diagnostic check by clicking on the Time Machine clock icon at the top of the Mac's screen and then clicking on Open Time Machine Preferences. On newer Macs, you can click on Open Time Machine Settings.

The verification process did one of two things.......it corrected errors in the backup file.....or it presented a screen to erase your backups because they were corrupted.

Hopefully, you did not have to erase the backups and start over again.