How to Fix Microsoft Defender Error 0x800106ba

Error 0x800106ba is a very common windows update error code given by Microsoft Defender. The complete error message you got is:

“Error Code 0x800106ba Application failed to initialize”

“Error Code 0x800106ba the systems license has expired. Your logon request is denied.”

When you see this error on your computer, you can come to following article for help:

 

Error 0x800106ba may occur when Windows Defender fails to be updated. The system contains some problems that prevent the Windows Defender from updating.  When such error occurs, try to follow below instructions to fix it:

 

Method 1: Re-register some dlls needed by Windows Defender.

Click Start, click Run, type regsvr32 file name, and then click OK.

Note: In this step, file name is a placeholder for the following files.

To register dlls requires some professional skills. If you are not familiar with how to use regsvr32.exe, it is recommended that you use a registry fixer to register the dlls for you. It will also clean the registry errors in your computer and fix issues that cause the Windows Defender errors. It is always highly suggested that you have a registry cleaner in computer to keep your system healthy and safe.

 

Method 2: Uninstall and reinstall Windows Defender.

• 1. Click Start, click Run, type appwiz.cpl, and then click OK.
• 2. Click Windows Defender, and then click Remove.
• 3. Follow the prompts to uninstall Windows Defender.
• 4. Then redownload Windows Defender from official website.

 

 

Method 3:  Disable your anti-virus software when updating.

Sometimes anti-virus software will prevent your system from updating. In this situation, please disable your anti-virus software currently. When the update is finished, you can enable the function one more time. Not all anti-virus software will prevent such operation, but some of them may do so. Just do as I recommended.