Fix: Windows Defender error 0x80004004

Windows Defender program is a great security service provided by Microsoft in Windows. In Windows 8 and Windows 10, Defender has been improved a lot and now, it can be used as a stand-alone antivirus program. Windows defender is a freeware tool provided by Microsoft in Windows 8 and Windows 10 for the purpose of protecting the systems from external threats including malwares and spywares. So, it is pretty helpful for Windows users as it eliminates the need of downloading additional 3rd party softwares for the sake of protection.

While trying to update the Windows Defender, some users have reported an Error i.e. Error 0x80004004 also stating that Virus and spyware definitions couldn’t be updated. So, those users who rely on this integrated antivirus can’t get it to work properly due to updates issue. So, it needs to be fixed in order for the program to remain updated against viruses.


Reason Behind the Windows Defender Error 0x80004004:

This error can occur due to another antivirus program installed on the same system. It can create conflicts by preventing the Windows Defender program from updating. Another reason behind this error could be some system files missing. Bad internet connection can also result in this error to appear.

Solutions to Fix the Windows Defender Error 0x80004004:

Based on the reason I mentioned above, there are a number of solutions to solve this annoying update error on Windows Defender. Before moving further, make it sure that your internet connection is working efficiently.

Method # 1: Setting the Windows Defender Service to Automatic

Setting the defender service to automatic can fix this error. Follow the instructions properly.

1. Search for Services inside Cortana and run it as administrator. If prompted for password, type it and click Continue.


2. Inside the Services window, search for Windows Defender Service inside the right pane and double click over it to change the startup type to Automatic. Restart the update again to check whether it works for you or not.


Method # 2: Disabling Third-Party Security Program Temporarily

Third-party security programs installed on the PC can also create conflicts causing the error message during virus definition update process of Windows Defender. So, disabling the antivirus before update defender can prove to be a solution.

You can temporarily disable any third-party antivirus on your PC by going to Settings. After the update process is done, and then you can re-enable it for full protection.

Method # 3: Running System File Checker Scan

System file checker scan (SFC scan) is a pretty good facility provided by Microsoft in order to find and fix system corrupted or missing files automatically. So, by running this scan, you can get it the problem fixed.

You can follow the guide on running SFC scan on your computer by clicking on this Link.

Kevin Arrows
Kevin is a dynamic and self-motivated information technology professional, with a Thorough knowledge of all facets pertaining to network infrastructure design, implementation and administration. Superior record of delivering simultaneous large-scale mission critical projects on time and under budget.

Expert Tip

Fix: Windows Defender error 0x80004004

If the issue is with your Computer or a Laptop you should try using Restoro which can scan the repositories and replace corrupt and missing files. This works in most cases, where the issue is originated due to a system corruption. You can download Restoro by clicking the Download button below.

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