FIX Windows could not start Windows Defender Service, Error 577, Windows cannot verify the digital signature for this file message on Windows 11/10.

To fix Windows Defender Error Code 0x800106ba, Application failed to initialize error, you need to re-register these DLL files.

In this latest installment of our troubleshooting series, we will talk about the recommended solutions that you can try to fix Windows Defender Blocked by Group Policy problem on Windows 10 pc.

According to multiple user reports, the Windows Defender Antivirus, Microsoft Endpoint Protection, and Microsoft Security Essentials antimalware solutions are crashing randomly with a 0x800106ba ...

To install the latest Windows Defender update, I had to fight it out with Avast antivirus. It took a few rounds, but in the end, I won.