I have been using File History (in Windows 8 and 8.1) to an external drive connected through a USB 3.0 port. Since upgrading to 8.1, the 3.0 port is unreliable (Renesas driver errors) and I have not been able to find a solution. So I reconnected the drive through a USB2 port. When I restart, the drive is recognized in Explorer as "File History (E
" as it was before. But File History will not recognize it (Unknown Error). When I use "Select another drive", I am given the option to select my File History drive, but when I do so, I get a prompt about moving files from the old drive to the new one. Since they are the same drive, needless to say, this doesn't work! If I decline the option, I get an error message "Could not enable File History - The system cannot find the file specified".
Any suggestions (short of re-formatting the drive (which would destroy all previous FH backups) and changing its letter!)?
Thanks.

Any suggestions (short of re-formatting the drive (which would destroy all previous FH backups) and changing its letter!)?
Thanks.