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

How to completely disable Windows Defender on Windows 10? There are several ways to disable Windows Defender on Windows 10, please see the detailed instructions below.

Like SmartScreen, some antivirus programs block legitimate applications from running because of non-verified app publishers. To run the intended app, you can temporarily turn off Windows Defender ...

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.

Windows comes with additional virus protection that blocks the installation of programmes. At the same time, it can also prevent unwanted changes.

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