Forum Discussion
Unrecognized database format
Using Access on windows 10: yesterday it worked fine, today it won’t open the file but displays this: Unrecognized database format (filename).accdb Any suggestions?
This is why we keep good backups.
You can try Repair and Compact (on a copy, of course), but if that doesn't work, you'll need to restore a backup.
You have already rebooted your computer, right?
can’t open the copy or original to do a repair.