batcmd.com Windows 8 Services

USB Mass Storage Driver - Windows 8 Service

USB Mass Storage Class Driver by Microsoft Corporation.

This service also exists in Windows 10, 7 and Vista.

Startup Type

Windows 8 edition Windows 8 Windows 8.1 Windows 8.1 Update 1
Core Manual Manual Manual
Pro Manual Manual Manual
Enterprise Manual Manual Manual

Default Properties

Display name:USB Mass Storage Driver
Service name:USBSTOR
Type:kernel
Path:%WinDir%\System32\drivers\USBSTOR.SYS
Error control:normal

Default Behavior

The USB Mass Storage Driver service is a kernel mode driver. If USB Mass Storage Driver fails to start, the error is logged. Windows 8 startup proceeds, but a message box is displayed informing you that the USBSTOR service has failed to start.

Restore Default Startup Type for USB Mass Storage Driver

Automated Restore

1. Select your Windows 8 release and edition, and then click on the Download button below.

2. Save the RestoreUSBMassStorageDriverWindows8.bat file to any folder on your hard drive.

3. Right-click the downloaded batch file and select Run as administrator.

4. Restart the computer.

Note. Make sure that the USBSTOR.SYS file exists in the %WinDir%\System32\drivers folder. If this file is missing you can try to restore it from your Windows 8 installation media.