If Windows Defender is blocking Avast antivirus, you can add the blocked file as an exception in Windows Security. Here are some more fixes.

To block an application from accessing the internet using Windows Defender Firewall, follow these steps: Open Windows Defender Firewall on your PC. Click on the Advanced settings option.

Latest Windows Defender update adds new security feature that can help block vulnerable third-party drivers on your PC.

For the PUA blocking feature to work in the Microsoft Edge browser, you first have to toggle on the Windows Security Microsoft Defender SmartScreen according to the Edge Team.

Starting this month, Microsoft Defender and Microsoft Edge will block potentially unwanted apps by default. These apps can slow down your PC and install unwanted programs.

Microsoft has released new Windows 11 builds to the Beta Channel with improved Microsoft Defender for Endpoint ransomware attack blocking capabilities.