About 3 weeks ago, Time Machine stopped backing up my system. There's room on the backup drive. TM periodically reminds me that I haven't backed up. Sometimes I have a "backup failed" message.
Also, TM will not display on my menu bar, even though I selected that option in System Preferences. So I can't launch it to force a backup. If I launch from Launchpad, I get the display of past backups, and no way to force a backup.
Viewing the backup drive on Finder, there is no circular arrow indicating a backup is in progress. But the backup folder on the backup drive has a file called "2015-10-08-121638.inProgress" timestamped earlier today.
I'm on a Macbook Air, OSX 10.10.5.
Edited by dianne (10/08/15 11:57 AM)
Edit Reason: Moved from the Mac OS X Applications forum.