Microsoft Virtual Drive Enumerator (vdrvroot) Service Defaults in Windows 8

Virtual Drive Root Enumerator by Microsoft Corporation.

Default Settings

Startup type:Boot
Display name:Microsoft Virtual Drive Enumerator
Service name:vdrvroot
Service type:kernel
Error control:critical
Group:Boot Bus Extender
Path:%SystemRoot%\System32\drivers\vdrvroot.sys
Registry key:HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\vdrvroot

Default Behavior

The Microsoft Virtual Drive Enumerator service is a kernel device driver. In Windows 8 it is being loaded by Boot Loader before Kernel initialization. If Microsoft Virtual Drive Enumerator fails to load or initialize, the error details should be automatically logged. Then Windows 8 is restarting the PC and attempting to use the Last Known Good configuration. If the Last Known Good configuration isn't working properly, Windows 8 startup ends with a Stop error. If you disable the vdrvroot service, Windows 8 will fail to start.

Restore Default Startup Configuration for Microsoft Virtual Drive Enumerator

1. Run the Command Prompt as an administrator.

2. Copy the commands below, paste them into the command window and press ENTER:

sc config vdrvroot start= boot
sc start vdrvroot

3. Close the command window and restart the computer.

The vdrvroot service is using the vdrvroot.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.