Fix for Error “Windows Resource Protection Could Not Start the Repair Service” When Running SFC in Windows 7 and Vista

© Ramesh Srinivasan | Windows 7, Windows Vista | 10th March 2009

When you run the System File Checker using the /Scannow parameter from an elevated Command Prompt, the following error may occur. Additionally, you may experience problems running Windows Installer Setup files and installing fixes from Windows Update.

Windows Resource Protection could not start the repair service

This happens if the TrustedInstaller (Windows Modules Installer) service is disabled. Use these steps to reset the service startup type.

1. Click Start, type Services.msc

2. Double-click Windows Modules Installer

3. Set its Startup type to Manual

4. Click OK.

The TrustedInstaller service has full access to Windows Resource Protection (WRP) files and registry keys, and this services needs to be running in order to restore missing or corrupted WRP resources. The TrustedInstaller service starts on-demand when running the System File Checker.

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18 Comments

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  1. hftj
    said this on Tuesday, January 17th 2012 10:31 pm

    Being on Manual, then you can start the service.
    It should work now

    The problem was, if it was on automatic and if you start the service it automaticaly stops.

  2. Jay
    said this on Wednesday, January 4th 2012 11:40 pm

    Thanks a million sir, works perfectly as described!

  3. Brian
    said this on Monday, December 12th 2011 2:01 pm

    mine was on manual and i was still getting teh same problem, however I then right clicked ” Windows Modules Installer ” and clicked Start – then tried the sfc /scannow & it worked.

    - fixed my problem! get in!

  4. mark
    said this on Tuesday, December 6th 2011 6:13 am

    Thank you so much. Spent what felt like hrs trying to fix this. Thx sooooo much! :-)

  5. Bob_B.
    said this on Thursday, November 3rd 2011 9:44 pm

    Did not work for me either.

  6. Olof
    said this on Tuesday, November 1st 2011 9:52 pm

    Didn’t do the trick for me.. :/

  7. steve
    said this on Monday, September 26th 2011 12:01 am

    ok…found it is on manual, still doesnt work?

  8. Joe
    said this on Wednesday, September 14th 2011 5:49 am

    Thanks. Worked like a charm. What would cause this to get turned off anyway???

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