Fix: Windows Defender Error 0x80073b01

In previous versions of Windows, we needed several Antivirus programs to keep our system and network protected from malware at all times. But in the latest versions of Windows, we have witnessed the inclusion of the Windows defender program that acts as a firewall program and provides protection against viruses as an antivirus program. So many Windows users don’t use any other third-party antivirus program on their Windows system anymore.

But much like other Windows utility features, the Windows defender is also not free from bugs. From time to time, several Windows users have reported different problems with the Windows Defender program. One particular error that we will take a look at here is the Windows Defender error code 0x80073b01. If you are witnessing this error code in your Windows device, then this article will help you out. Here we have included all the possible solutions that have fixed this error for many Windows users. So without any further ado, let’s get into it.

How to fix Windows Defender error code 0x80073b01?

The Windows Defender error code 0x80073b01  shows up when you are trying to launch the program. There could be various reasons behind this issue, ranging from bugs to other third-party programs. It could also be the result of a possible malware infection on your computer. Whatever may be the cause for it, let’s take a look at all the solutions for it. You don’t need to try all the solutions mentioned here. Just try one solution after the other until you find the one that solves your problem.

Uninstall third-party antivirus software:

As mentioned above, one possible cause for the Windows Defender error code 0x80073b01 is a third-party antivirus program running in the background. Some antivirus programs block or interfere with the Windows Defender’s security features, which in turn shows up the error code 0x80073b01.

• Press Windows key + I to open up Windows Settings.
• Click on Apps.
• Click on the Apps & Features tab in the left pane of the Apps settings page in Windows settings. In the right pane here, you will see the entire list of installed applications on your computer.
• Look for the third-party antivirus program installed on your computer in this list and once you find it, click on it. Then click on the uninstall button that shows up right below it.

• Then follow the on-screen instructions to complete the uninstallation process of the anti-virus program.

Once you have uninstalled the anti-virus program, restart the computer and then try relaunching Windows Defender. If you see the error code 0x80073b01 again, try the next solution mentioned below.