Windows Modules Installer - Windows 7 Service
Enables installation, modification, and removal of Windows updates and optional components. If this service is disabled, install or uninstall of Windows updates might fail for your computer.
This service also exists in Windows 10, 11, 8 and Vista.
Startup Type
| Windows 7 edition | without SP | SP1 |
|---|---|---|
| Starter | Automatic | Manual |
| Home Basic | Manual | Manual |
| Home Premium | Manual | Manual |
| Professional | Manual | Manual |
| Ultimate | Manual | Manual |
| Enterprise | Manual | Manual |
Default Properties
| Display name: | Windows Modules Installer |
| Service name: | TrustedInstaller |
| Type: | own |
| Path: | %WinDir%\servicing\TrustedInstaller.exe |
| Error control: | normal |
| Group: | ProfSvc_Group |
| Object: | localSystem |
Default Behavior
The Windows Modules Installer service runs as localSystem in its own process. It does not share the executable file with other services. If the Windows Modules Installer fails to load or initialize, the error is recorded into the Event Log. Windows 7 startup should proceed, but a message box is displayed informing you that the TrustedInstaller service has failed to start.
Restore Default Startup Type of Windows Modules Installer
Automated Restore
1. Select your Windows 7 edition and Service Pack, and then click on the Download button below.
2. Save the RestoreWindowsModulesInstallerWindows7.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 TrustedInstaller.exe file exists in the %WinDir%\servicing folder. If this file is missing you can try to restore it from your Windows 7 installation media.