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 of USB Mass Storage Driver
1. Run the Command Prompt as an administrator.
2. Copy the command below, paste it into the command window and press ENTER:
sc config USBSTOR start= demand
3. Close the command window and restart the computer.
The USBSTOR service is using the USBSTOR.SYS file that is located in the C:\Windows\System32\drivers directory. If the file is removed or corrupted, read this article to restore its original version from Windows 10 installation media.