Windows Modules Installer - Windows 10 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 11, 8 and Vista.
Startup Type
| Windows 10 version | Home | Pro | Education | Enterprise |
|---|---|---|---|---|
| 1507 | Manual | Manual | Manual | Manual |
| 1511 | Manual | Manual | Manual | Manual |
| 1607 | Manual | Manual | Manual | Manual |
| 1703 | Manual | Manual | Manual | Manual |
| 1709 | Manual | Manual | Manual | Manual |
| 1803 | Manual | Manual | Manual | Manual |
| 1809 | Manual | Manual | Manual | Manual |
| 1903 | Manual | Manual | Manual | Manual |
| 1909 | Manual | Manual | Manual | Manual |
| 2004 | Manual | Manual | Manual | Manual |
| 20H2 | Manual | Manual | Manual | Manual |
| 21H1 | Manual | Manual | Manual | Manual |
| 21H2 | Manual | Manual | Manual | Manual |
| 22H2 | Manual | Manual | 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 is running as localSystem in its own process of TrustedInstaller.exe. It doesn't share its process with other services. If Windows Modules Installer fails to start, the error is logged. Windows 10 startup proceeds, 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 10 edition and release, and then click on the Download button below.
2. Save the RestoreWindowsModulesInstallerWindows10.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 10 installation media.