Microsoft UMPass Driver Service Defaults in Windows 8
Generic pass-through driver by Microsoft Corporation.
Default Settings
| Startup type: | Manual |
| Display name: | Microsoft UMPass Driver |
| Service name: | UmPass |
| Service type: | kernel |
| Error control: | normal |
| Group: | Extended Base |
| Path: | %SystemRoot%\System32\drivers\umpass.sys |
| Registry key: | HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\UmPass |
Default Behavior
The Microsoft UMPass Driver service is a kernel device driver. In Windows 8 it will not be started until the user starts it. If Microsoft UMPass Driver fails to start, the error details are added to Windows 8 error log. When the operating system startup is complete, the user is being notified that the UmPass service hasn't been started.
Restore Default Startup Configuration of Microsoft UMPass 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 UmPass start= demand
3. Close the command window and restart the computer.
The UmPass service is using the umpass.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 8 installation media.