Windows Firewall Error 0x6d9 “The snap-in failed to load”

When you open the Windows Firewall (with Advanced Security) applet, the following error may show up:

There was an error opening the Windows Defender Firewall with Advanced Security snap-in

The Windows Defender Firewall with Advanced Security snap-in failed to load. Restart the Windows Defender Firewall service on the computer that you are managing. Error code: 0x6D9.

windows firewall error Error 0x6d9 - There are no more endpoints available from the endpoint mapper

The Win32 error code 0x6D9 (“0x800706D9” or EPT_S_NOT_REGISTERED) means “There are no more endpoints available from the endpoint mapper.”

Attempting to start the Windows Firewall service (“mpssvc“) may show that the service gets stuck in the “Start Pending” state.

RELATED: The Windows Firewall issue may prevent the installation and updating of the Store apps. Some Store apps can’t be installed or updated unless Windows Firewall is fixed. For more information, check out the article: Windows Store Error 0x800706D9


The Windows Firewall error 0x6D9 may occur if one or both of the following service registry keys are corrupted, or their permissions are incorrect.





To resolve the issue, follow these steps to replace the SharedAccess, BFE, and MpsSvc registry keys from another computer running the same Operating System. The following steps should restore the missing keys/values and fix incorrect registry permissions.

  1. In the C:\ drive, create a folder named “Registry” — C:\Registry.
  2. Download or
  3. Extract the four files from the Zip file to C:\Registry.
  4. From the C:\Registry folder, right-click “Run.bat” and choose “Run as administrator.”
    bfe firewall sharedaccess hives - Firewall Error 0x6D9
    (Note: You should see the output “The operation completed successfully” for each command.)
    bfe firewall 0x6D9 fix
  5. Restart Windows.

windows firewall error Error 0x6d9 resolved

The Base Filtering Service, Internet Connection Sharing (ICS), and Windows Firewall services should now be fixed.

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Ramesh Srinivasan is passionate about Microsoft technologies and he has been a consecutive ten-time recipient of the Microsoft Most Valuable Professional award in the Windows Shell/Desktop Experience category, from 2003 to 2012. He loves to troubleshoot and write about Windows. Ramesh founded in 2005.

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