USB Mass Storage Driver (USBSTOR) Service Defaults in Windows 10

USB Mass Storage Class Driver by Microsoft Corporation.

Default Settings

Startup type:Manual
Display name:USB Mass Storage Driver
Service name:USBSTOR
Service type:kernel
Error control:normal
Path:%SystemRoot%\System32\drivers\USBSTOR.SYS
Registry key:HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\USBSTOR

Default Behavior

USB Mass Storage Driver is a kernel device driver. In Windows 10 it is starting only if the user, an application or another service starts it. If USB Mass Storage Driver fails to start, the failure details are being recorded into Event Log. Then Windows 10 will start up and notify the user that the USBSTOR service has failed to start due to the error.

Restore Default Startup Configuration for USB Mass Storage Driver

1. Select your Windows 10 edition and release, and then click Download.

2. Save the Win10_USBSTOR_Service_Startup.cmd file to a local storage device.

3. Run the saved file as an administrator.

4. Restart the computer.

The USBSTOR service is using the USBSTOR.SYS file that is located in the %WinDir%\System32\drivers folder. If the file is changed, damaged or deleted, you can restore its original version from Windows 10 installation media.