Windows Defender Error Code 0x8007139f: Quick Fixes

Developed by Microsoft, Windows Defender is a popular program for enabling anti-malware component in your device. So, if you have this program on Windows-based PC or laptop, it keeps the device safe from malware attacks and even online threats. However, there is no guarantee that you won’t experience any technical error with such Windows protection software. Since many users are nowadays facing the Windows Defender Error Code 0x8007139f on their PCs. Whenever this error occurs, it can stop the Window Defender to operate normally on your system. Also, it may generate an error notification that indicates the resource is not in its appropriate form. This is why Windows Defender can’t perform the requested operation from the users.

So, if you don’t resolve this Windows error, it can allow numerous malware, viruses or security threats on your computer. Hence, in this article, you can check out a few possible troubleshooting techniques to fix 0x8007139f error in Windows Defender. To know more about these technical fixes and the underlying causes of this Windows problem, keep reading this content.

Reasons Why Windows Defender Error Code 0x8007139f Shows Up On  Your PC?

If you are getting the error notification message from Windows Defender on your computer, pay attention to any other third-party software installed on it. As, in most of the cases, users can experience Windows Defender error code 0x8007139f due to conflict with another security program on Windows. There are few more possible reasons for this Windows Defender error, which are covered in the points below.

  • In versions like Windows 7, 8.1 and 10, you can face technical errors in form of Windows Update. So, if you install any incorrect updates for Windows Defender, it can generate 0x8007139f error notification.
  • Sometimes, this issue can trouble the users if they are running a version of Windows Defender, which is incompatible with the OS. This can further corrupt your user account on PC and stop you from running this Windows application.
  • If any component is missing while installing Windows OS on your PC, it can cause issues with Windows Defender as well. In this condition, you unknowingly may allow corrupted files through Windows Update from an unreliable source. Hence, it can infect the existing program on your system and cause this 0x8007139f error.

Also Read: How To Fix Windows Defender Error 577

Apply These Fixes To Resolve Windows Defender Error Code 0x8007139f

In case, your PC repeatedly displays the notification regarding Windows Defender could not be started error code 0x8007139f, you can try some technical methods to fix this problem. So, let’s cover the details of these solutions in the following points.

Fix 1: Turn On Windows Firewall And Set Automatic Startup

The first solution involves checking whether the feature of Windows Defender is enabled on your device. So, hit both Windows and X keys altogether and find the option of Control Panel. Then locate the program of Windows Firewall and click on it.

After this, on the left pane, you will see the option ‘Turn Windows Firewall on/off’. Hence, you need to turn on the Windows Firewall and then, hit the ‘OK’ button. Make sure that you are turning Windows Firewall on for both public as well as private network settings.

Next, you can access the Run dialog box (Win+R) and type ‘services.msc’ in it. This will help you to view the Windows Services window and check the ‘Startup’ status for Windows Defender. If it is made ‘Manual’, you need to make it ‘Automatic’ for resolving error 0x8007139f.

Fix 2: Repair or Remove Corrupted Windows Defender Registry Files

In case, you can’t start or restart Windows Defender due to the 0x8007139f error code, it may require fixing the registry keys. So, first, go to the search box and write ‘regedit’ in it. The window will display ‘Registry Editor’ and you can select the corrupted files and delete them, if unable to repair.

Further, you can try to install correct Windows Update on your system to fix Windows Defender error. Also, you can try both these fixes or any other solution after removing or disabling any third-party protection software on your PC. In case, you can’t fix the problem of Windows Defender error code 0x8007139f on your computer, you can consult Windows professionals for the most appropriate solutions to get rid of this error.

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