Windows Defender Error Code 0x80070424 [Resolved]

Windows Defender error code 0x80070424 occurs while trying to apply Microsoft Update or manage the Windows Firewall settings. Users have claimed that this error code mostly occurs due to issues within the Windows Module Installer Service or the TrustedInstaller.exe binary. Moreover, it symbolizes Trojan/rootkit on a Windows 7 or Vista 64 bit.

How to Fix Windows Defender Error Code 0x80070424?

Besides its causes, there are numerous ways to get rid of it. To be more precise, we have listed some of the fixes below.

Fix 1: Enable Windows Firewall Services

At first, enable the Windows Firewall Services and check if that resolves the issue for you or not. To implement this fix, follow the steps given below in sequence.

  • Press both Windows and R keys simultaneously. Type “services.msc” and then press Enter.
  • Look for Windows Firewall and right-click on it. Click on Properties.
  • If the service is not running, go to Start and make the Startup type to Automatic.
  • Click on Apply and then OK. Restart your system. 

Fix 2: Reset Windows Update Components

Another way by which you can fix this error code easily is by resetting the Windows Update Components. To do so, follow the steps given below orderly.

  • Press both Windows and X keys together. Now, select Command Prompt (Admin).
  • Now, enter the command given below and press Enter after each 

netsh advfirewall reset

net start mpsdrv

net start bfe

net start mpssvc

regsvr32 firewallapi.dll

  • As soon as you see the confirmation window, click on Ok. 
  • Restart your system and see if the problem resolves for you or not.

Fix 3: Start Associate Services

If the problem persists, then we recommend you to start associate services by following the steps cited below.

  • Press both Windows and R keys together. Type notepad within it and press the Enter button.
  • Type the texts exactly as given below inside the notepad file

sc config MpsSvc start= auto

sc config KeyIso start= auto

sc config BFE start= auto

sc config FwcAgent start= auto

net stop MpsSvc 

net start MpsSvc 

net stop KeyIso 

net start KeyIso

net start Wlansvc

net start dot3svc

net start EapHostnet 

net stop BFE 

net start BFE

net start PolicyAgent

net start MpsSvc

net start IKEEXT

net start DcaSvcnet 

net stop FwcAgent 

net start FwcAgent

  • Now to Save the file, Go to File and then click on the Save As option. Write RepairFirewall.bat in the box of the file name.
  • Select All File from the Save As Type dropdown and then Save. 
  • Again, go to the recently created  RepairFirewall.bat and right-click on it. Select the “Run as Administrator” option.
  • Once the repairing process finishes successfully, go to Windows Firewall and delete the RepairFirewall.bat file. 

Fix 4: Remove Virus Manually

Try to remove the virus manually and see if that works for you. Here are the steps following which you will be able to remove the virus manually. 

  • Within the Windows search, type regedit. Now, right-click on it and click on Run as administrator. 
  • Go to Computer\HKEY_CURRENT_USER\SOFTWARE\Classes Registry key.
  • Under the Classes folder, right-click on the .exe registry subkey and click on Delete.
  • Look for the “secfile” registry subkey in the Classes folder and delete it. Click Ok. 
  • Close the Registry Editor and reboot your system to check if the issue resolved. 

Fix 5: Restart Windows Modules Installer Service

If the problem does not resolve, simply restart the Windows Modules Installer Service by following the steps mentioned below.

  • Press Windows + R keys simultaneously to invoke the Run box and type “services.msc”. Hit Enter. 
  • Look for Windows Modules Installer Service and check if it’s disabled. If it is, then set it to Manual. 
  • Now, make sure to start the service and try running Windows Update again. 

Fix 6: Check for Windows Update

An outdated Windows is another reason why you may encounter such errors and thus it is better to check for the Windows update. To check for Windows update, follow the steps given below.

  • Press both Windows and I keys together and choose Update & Security.
  • Click on “Check for Updates” and see if there are any pending updates available.
  • Make sure to install them and restart your system. 

Hopefully, the fixes mentioned above would help you fix this Windows Defender
error code 0x80070424 quickly.