Resolve Windows Defender Error Code 0x80073b01

 Windows Defender Error Code 0x80073b01

At times, when you try to open Windows Defender, you might encounter the error code 0x80073b01. Some messages associated with this error code could be: Not able to find Windows Defender in Control Panel. (or) Not able to start Windows Defender. However, you might see the message that states that Windows Defender is on and running; it is still protecting your computer, and you will continue getting the updates for it. In spite of these messages, you will not be able to start Windows Defender. The Windows defender error code 0x80073b01 might pop up if Windows Defender is damaged. It might also occur if there is any kind of corruption in the Registry. Another reason could be a misconfigured application file. Some solutions to fix this particular Windows Defender error are provided here: Troubleshooting Methods to fix the Windows Defender error with Code 0x80073b01:

Method 1-Running your System File Checker Tool:

The System File Checker Tool accompanies your Windows operating system. It aids in scanning and also repairing the corrupted system files. In case the corrupted system files are the reason behind the error, then this method should, hopefully, fix the same.

Instructions To Fix The Error:

  • On your computer, press the Windows key and the S key at the same time.
  • Now, in the Search box that pops up, type in cmd.
  • From the options displayed, right-click Command Prompt and then select the Run as Administrator option.
  • The Command Prompt window opens. Now, type in the command, sfc /scannow.
  • Please do not forget to press the Enter key once you have typed the entire command.
  • The sfc /scannow command will start scanning all your protected system files. It will also perform the task of replacing the corrupted files with cached copies.
  • Once the scanning and replacing processes are finished, your error code 0x80073b01 should have been resolved. If not, then you have to move on to the next method.

Method 2-Update Windows Defender:

In case your Windows Defender is outdated, it might result in the Windows defender error code 0x80073b01. In this case, you have to check for updates and see whether any update is available. This method is quite a simple and easy one. It does not need any technical knowledge. A layperson can do it.

Please carry out the instructions given below to fix the error:

  • On your computer, press the Windows key and the S key at the same time.
  • Now, in the search box that pops up, type in Windows Update.
  • From the list that appears, select the Check for updates option.
  • In case there are any updates available, you can choose the Install option.
  • When the update has been installed on your computer, you have to reboot it.

The above method should help in fixing the error with code 0x80073b01. We have now discussed the Error Code 0x80073b01. We have also seen a couple of troubleshooting methods to resolve the issue.

Method 3: Run SFC

  • Run SFC on your Windows computer by following the instructions given below.
  • Open the Command Prompt application.
  • Type the command sfc /scannow on the cmd screen and press the Enter key.
  • Wait for the on-going process to complete.
  • It is better to run SFC at least 3 times.
  • After that, check if the Windows Defender Error Code 0x80073b01 is resolved.
  • If not, contact us.


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