I also had the same problem. and have a simple solution to recover your USB. This will remove ALL information from the drive and render the data irrecoverable
Within Windows access the command Prompt
Type
“diskpart” - this will likely open another window
“list disk”
“select Disc X” - select the disk you would like to fix
“detail disk” - gives you the rundown on the selected disk (just to double check yourself!) ** note the volume number**
“delete Volume X”
“create partition primary”
edit: For one device I still had to remove the USB drive, re-insert it, and then have Microsoft format the drive before it would be usable :end edit
That should get your USB back up and running after.
Cheers!