Usbstor.sys Driver For Mac

Windows can’t find your USB devices? Make sure USBSTOR.INF is still there! I spent a few days trying to figure this out, and apparently all modern versions of Windows suffer from it, yet it’s barely/poorly documented anywhere: If your usb devices are no longer recognized by Windows, no matter how many times you try to install or update the drivers, go look in c: windows inf (make sure you can see hidden and system files) and see if you cannot find: usbstor.inf usbstor.pnf All you have to do is restore/replace them and bingo, everything will work again, I didn’t even have to reboot. Windows2k (2000), Windows XP, Vista and even Windows 7 suffer from this problem. Basically my external mass storage (bulk storage) devices suddenly were not being seen when I plugged them in.

Reinstall Usbstor

Usbstor.sys Driver For Mac Os

Reinstalling the drivers was useless and just ended up saying that windows could not find the drivers needed. Some program uninstalls those two when you uninstall it – I am not sure what, why or how but it’s yet another Windows mystery to solve. I have spent days trying to sort out this USB issue.I have 2 win 2000 machines same install.One machine USB works the other fresh install dosnt work.Searched for missing files on the machine that USB dosnt work and both files are present.USB device shows up and is working.Drive shows up but cant formatt, change drive letter, change volume label or access files.Drive works in other Win 2000 machine fine.Only diffrence one machine Fat32 file setup The other I think I have a corrupt reg setting its a real head ache this fault.But I wont let it beat me. December 18, 2011 at 3:02 am. I was one of poor guys whose Windows 7 got destroyed by the Microsoft.NET Framework 4.5 patch. On the other hand, I was one of the lucky guys who managed to recover from the BSOD after manually removing the patch and applying some other fixes.

Still, my Windows 7 was damaged and it did not recognize any USB devices since then. Now, based on this posting, I restored the usb.inf files (and some usb drivers to the folder C: Windows System32 Drivers) and now everything works perfectly. NewtoM July 29, 2013 at 5:25 am.