dir C:\Windows\System32\drivers\usbstor.sys Expected output:
Volume in drive C is Windows Directory of C:\Windows\System32\drivers xx/xx/202x xx:xx AM xx,xxx usbstor.sys To check its digital signature (ensures it's genuine Microsoft): usbstor.sys driver download windows 10
sfc /scannow This restores the correct version of usbstor.sys from Windows component store. If SFC fails, run: dir C:\Windows\System32\drivers\usbstor