Local Session Manager - Windows 10 Service
Core Windows Service that manages local user sessions. Stopping or disabling this service will result in system instability.
This service also exists in Windows 11 and 8.
Startup Type
| Windows 10 version | Home | Pro | Education | Enterprise |
|---|---|---|---|---|
| 1507 | Automatic | Automatic | Automatic | Automatic |
| 1511 | Automatic | Automatic | Automatic | Automatic |
| 1607 | Automatic | Automatic | Automatic | Automatic |
| 1703 | Automatic | Automatic | Automatic | Automatic |
| 1709 | Automatic | Automatic | Automatic | Automatic |
| 1803 | Automatic | Automatic | Automatic | Automatic |
| 1809 | Automatic | Automatic | Automatic | Automatic |
| 1903 | Automatic | Automatic | Automatic | Automatic |
| 1909 | Automatic | Automatic | Automatic | Automatic |
| 2004 | Automatic | Automatic | Automatic | Automatic |
| 20H2 | Automatic | Automatic | Automatic | Automatic |
| 21H1 | Automatic | Automatic | Automatic | Automatic |
| 21H2 | Automatic | Automatic | Automatic | Automatic |
| 22H2 | Automatic | Automatic | Automatic | Automatic |
Default Properties
| Display name: | Local Session Manager |
| Service name: | LSM |
| Type: | share |
| Path: | %WinDir%\system32\svchost.exe -k DcomLaunch -p |
| File: | %WinDir%\System32\lsm.dll |
| Error control: | normal |
| Group: | COM Infrastructure |
| Object: | LocalSystem |
Default Behavior
The Local Session Manager service is running as LocalSystem in a shared process of svchost.exe. Other services might run in the same process. If Local Session Manager fails to start, the error is logged. Windows 10 startup proceeds, but a message box is displayed informing you that the LSM service has failed to start.
Dependencies
Local Session Manager is unable to start, if at least one of the following services is stopped or disabled:
Restore Default Startup Type of Local Session Manager
Automated Restore
1. Select your Windows 10 edition and release, and then click on the Download button below.
2. Save the RestoreLocalSessionManagerWindows10.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 lsm.dll file exists in the %WinDir%\System32 folder. If this file is missing you can try to restore it from your Windows 10 installation media.