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 for Microsoft UMPass Driver

1. Select your Windows 8 edition and update pack, and then click Download.

2. Save the Win8_UmPass_Service_Startup.cmd file to a local storage device.

3. Run the saved file as an administrator.

4. Restart the computer.

The UmPass service is using the umpass.sys file that is located in the %WinDir%\System32\drivers folder. If the file is corrupted or deleted, you can put it back in there.