Windows Defender error code 0X80073B01 is a critical Windows error and is caused by corrupt registry entry, malware, viruses, and corrupted or damaged system files.
This must be repaired immediately to avoid more corruption in other applications or hardware. Moreover, you may experience various problems due to this error code such as slow PC performance, shut down problems, and many more.
If you are going through this problem, then follow this guide and apply these troubleshooting methods to get rid of the error code 0X80073B01.
Windows Defender Error Code 0X80073B01 [Fixed]
In case, if you are facing Windows Defender error code 0X80073B01, you are not alone. But the good news is you can resolve the problem easily. This post shows you the methods that can help you to get rid of this situation. Let’s get started.
Fix 1: Uninstall any Third-Party Antivirus
The main reason behind this error is third-party antivirus software. The antivirus software probably interferes with the built-in Windows Defender and as a result, the error code appears.
#1. First of all, press the Start button and then move to the Control Panel section. After that, navigate to the Programs and Features section.
#2. Now, locate the antivirus software from the list and right-click on it. Thereafter, select the Uninstall option from the drop-down menu.
It will take some time to complete the action. Once done, restart the system and check the status of the error code.
Fix 2: Use the Registry Editor
In order to fix the error code, you can use the Registry Editor tool. This is a powerful tool and it can easily resolve your problem. To run this tool, follow the instructions given in the section below.
- First of all, press the Windows key along with the R key to open the Run dialog box. After that, type ‘Regedit’ in the Run box and hit the Enter button to launch the Registry Editor on your device.
- Now, move to the HKEY_LOCAL_MACHINE/SOFTWARE/Microsoft/WindowsNT/Currentversion/ImageFileExecutionOption/ and delete the msseces.exe entry folder and then move to the HKEY_CURRENT-USER/Software/Microsoft/windows/Current version/Policies/Explorer/DisallowRun and again delete the msseces.exe entry.
Finally, restart the system and now, you can run the Windows Defender without facing any error code. Otherwise, move to the next section.
Fix 3: Run the System File Checker Tool
As we have mentioned in the earlier section that the error code might appear due to the corrupted or damaged system file, you need to repair the system files to fix this error.
To repair the system files, you can run the System File Checker tool. This is a built-in tool in Windows. When you run this tool, it will automatically start to scan your device and repair the damaged system files.
To run the SFC tool, follow the steps mentioned in the section below.
- At first, press the Windows key and R key at the same time to launch the Run dialog box. Now, type ‘cmd’ in the Run window.
- After that, right-click on the cmd icon and select the Run as Administrator from the drop-down menu to open the Command prompt as an admin.
- Thereafter, type ‘sfc/scannow’ in the command window and hit the Enter button to launch the SFC tool on your device.
Now, it will automatically start to scan your device and locate the corrupted system files. Wait until the scanning process gets over. We hope, after doing this process, you will never get the same issue.
In case, if the error code still persists, then apply the next method.
Fix 4: Check for Updates
It is possible that the error might appear if you have not installed the latest version of Windows OS. Thus, in order to download and install the latest version of Windows, go through the instructions mentioned below.
#1. At first, press the Windows key and go to the Control Panel section. After that, select the Windows Update option.
#2. Now, click on the Turn on Automatic Update option to check whether an updated version is available or not.
#3. Make sure that your device has a stable internet connection. If you found any fresh version of Windows OS, download it. It will take some to complete the downloading process.
#4. When the downloading process gets over, install it on your device.
Wait until the installation process gets over. When you are done with the steps, restart the system and check whether you are getting the same error code again or not.
Hopefully, the given solutions mentioned in the above section helps you to resolve error code 0X80073B01 Windows Defender easily. These are the most effective ways to fix the problem. So, check all the solutions and then verify which one best suits you.