If File History is not working and the Doesn’t recognize this drive error keeps troubling you, this post may help you. File History in Windows 11/10 allows users to ...

Reconnect it and then tap or click to keep saving copies of your files. Or even- Your files will be temporarily copied to your hard drive until you reconnect your File History drive and run a backup.

A bug in the Windows Sept patch Tuesday update may stop File History from working. But a new optional update fixes it.