When you open the Services MMC, the Windows Modules Installer Service (“TrustedInstaller”) service may be missing from the list.
On some systems, the Windows Modules Installer service may exist, but attempting to start the service causes error 3.
Windows could not start the Windows Modules Installer service on Local Computer. Error 3: The system cannot find the path specified.
As a result, you’re unable to run DISM or SFC. Also, you may be unable to reinstall Windows due to this issue.
Cause
The above issues occur if the Windows Modules Installer service registration has been corrupted.
Resolution
The Windows Modules Installer service can be fixed by starting Regedit.exe under the LocalSystem account. Follow these steps:
- Download TrustedInstaller_service.zip, unzip, and extract the file(s) to the desktop. The archive contains two files, TRUSTEDINSTALLER (Windows 10).reg and TRUSTEDINSTALLER (Windows 11).reg for Windows 10 and 11, respectively.
- Start Regedit.exe (
c:\windows\regedit.exe) under the LocalSystem (“SYSTEM”) account. To do so, use one of the methods discussed in this article, How to Run a Program as SYSTEM (LocalSystem) - In the Registry Editor window, click on the File menu, and choose Import…
- Browse and select the TrustedInstaller registry file which you downloaded earlier, and import it.
- Exit the Registry Editor.
- Restart Windows.
The Windows Modules Installer service should show up in the Services MMC and start correctly.
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