Mount Point Manager - Windows 10 Service
Driver responsible with maintaining persistent drive letters and names for volumes.
This service also exists in Windows 11, 8, Vista and XP.
Startup Type
| Windows 10 version | Home | Pro | Education | Enterprise |
|---|---|---|---|---|
| 1507 | Boot | Boot | Boot | Boot |
| 1511 | Boot | Boot | Boot | Boot |
| 1607 | Boot | Boot | Boot | Boot |
| 1703 | Boot | Boot | Boot | Boot |
| 1709 | Boot | Boot | Boot | Boot |
| 1803 | Boot | Boot | Boot | Boot |
| 1809 | Boot | Boot | Boot | Boot |
| 1903 | Boot | Boot | Boot | Boot |
| 1909 | Boot | Boot | Boot | Boot |
| 2004 | Boot | Boot | Boot | Boot |
| 20H2 | Boot | Boot | Boot | Boot |
| 21H1 | Boot | Boot | Boot | Boot |
| 21H2 | Boot | Boot | Boot | Boot |
| 22H2 | Boot | Boot | Boot | Boot |
Default Properties
| Display name: | Mount Point Manager |
| Service name: | mountmgr |
| Type: | kernel |
| Path: | %WinDir%\System32\drivers\mountmgr.sys |
| Error control: | critical |
| Group: | System Bus Extender |
Default Behavior
The Mount Point Manager service is a kernel mode driver. If Mount Point Manager fails to load or initialize, the error is logged and the computer attempts to restart, using the Last Known Good configuration. If the Last Known Good configuration fails, Windows 10 startup also fails, and the boot process halts with a Stop error. If you disable this service, Windows 10 will fail to start. Do NOT change this service startup configuration if your computer is working.
Restore Default Startup Type of Mount Point Manager
Automated Restore
1. Select your Windows 10 edition and release, and then click on the Download button below.
2. Save the RestoreMountPointManagerWindows10.bat file to any folder on your hard drive.
3. Right-click the downloaded batch file and select Run as administrator.
4. Restart the computer to save changes.
Note. Make sure that the mountmgr.sys file exists in the %WinDir%\System32\drivers folder. If this file is missing you can try to restore it from your Windows 10 installation media.