Fix: Windows firewall can’t change some of your settings Error code 0x8007042c

After you have upgraded to Windows 7, if you are unable to turn on your Windows 7 Firewall, this article will be able to help you.

To resolve this problem, you will have to ensure that the required services are started and running:

  • Windows Firewall (MpsSvc)
  • CNG Key Isolation (KeyIso)
  • Base Filtering Engine (BFE)
  • Firewall Client Agent (FwcAgent)

In case they are not, you may get this error message:



Windows firewall can’t change some of your settings Error code 0x8007042c

You may download and run this RepairW7FW bat (zipped) file. This is based on the information given in KB2530126.

Once you have downloaded the zip file, extract it contents. Right click on the .bat file and Run it as Admin.

This should help!

Also see Windows Firewall Troubleshooter.

Posted by on , in Category Windows with Tags
Anand Khanse is the Admin of, a 10-year Microsoft MVP Awardee in Windows & a Windows Insider MVP. Please read the entire post & the comments first, create a System Restore Point before making any changes to your system & be careful about any 3rd-party offers while installing freeware.


  1. bobo-ana




  3. Toto

    did not worw

  4. Navid

    It worked perfectly thank you so much

  5. Sava Garniemuktaphala

    thanks bro it work ^^

  6. hammand

    didnt work for shit!

  7. Hugh Ravinalaff

    Nope, didn’t work, still get error code

  8. globatechhub

    For Windows8 Tech Support
    contact on 1-800-935-0537

  9. test

    If this does not work for you try right clicking the file and running it as administrator

  10. wonder

    Did not work, I also ran it as an admin…. but still didn’t work 🙁

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