Dynamic Volume Manager (volmgrx) Service Defaults in Windows 10

Extension of the volume manager driver that manages software RAID volumes (spanned, striped, mirrored, RAID-5) on dynamic disks.

Default Settings

Startup type: Boot
Display name:Dynamic Volume Manager
Service name:volmgrx
Service type:kernel
Error control:critical
Group:System Bus Extender
Registry key:HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\volmgrx

Default Behavior

Dynamic Volume Manager is a kernel device driver. In Windows 10 it is starting by the operating system Boot Loader as a part of the driver stack for the boot volume. If Dynamic Volume Manager fails to load or initialize, Windows 10 attempts to record the error details into Event Log and restart the PC, using the Last Known Good configuration. If the Last Known Good configuration cannot be applied or working improperly, Windows 10 startup process halts with a Stop error. If you disable or delete the volmgrx service, Windows 10 won't start.

Restore Default Startup Configuration of Dynamic Volume Manager

1. Run the Command Prompt as an administrator.

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

sc config volmgrx start= boot
sc start volmgrx

3. Close the command window and restart the computer.

The volmgrx service is using the volmgrx.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.