Windows Vista Services

Desktop Window Manager Session Manager - Windows Vista Service

Provides Desktop Window Manager startup and maintenance services.

This service also exists in Windows 7.

Startup Type

Windows Vista edition without SP SP1 SP2
Starter Automatic Automatic Automatic
Home Basic Automatic Automatic Automatic
Home Premium Automatic Automatic Automatic
Business Automatic Automatic Automatic
Ultimate Automatic Automatic Automatic

Default Properties

Display name:Desktop Window Manager Session Manager
Service name:UxSms
Path:%WinDir%\System32\svchost.exe -k LocalSystemNetworkRestricted
Error control:normal
  • SeAssignPrimaryTokenPrivilege
  • SeCreateGlobalPrivilege
  • SeIncreaseQuotaPrivilege
  • SeSecurityPrivilege
  • SeTcbPrivilege

Default Behavior

The Desktop Window Manager Session Manager service as localSystem and runs in a shared process of svchost.exe. If Desktop Window Manager Session Manager fails to start, the error is recorded into the Event Log. Windows Vista startup proceeds, but a message box is displayed informing you that the UxSms service has failed to start.

Restore Default Startup Type of Desktop Window Manager Session Manager

Automated Restore

1. Select your Windows Vista edition and Service Pack, and then click on the Download button below.

2. Save the RestoreDesktopWindowManagerSessionManagerWindowsVista.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 uxsms.dll file exists in the %WinDir%\System32 folder. If this file is missing you can try to restore it from your Windows Vista installation media.

Yea, though I walk through the valley of the shadow of death, I will fear no evil: for thou art with me; thy rod and thy staff they comfort me.