Sometimes, the Windows Defender antivirus software may block the functions of the Avast antivirus program. If you are facing Windows Defender Avast Conflict, proceed with the steps that are given below to fix them.
Step 1: Stop Insider Preview Builds
Click the Start menu and select the Settings icon on your Windows computer.
Now, select the Update & Security section and click the Windows Insider Program on the left panel.
Click on the Stop Insider Preview builds button and select Yes when prompted for confirmation.
Select the ‘Roll me back to the last Windows release’ option and restart your computer.
Step 2: Uninstall Avast
If the issue persists, uninstall the Avast program from Control Panel.
Select the Apps and Features section and click the Uninstall button beside the Avast section.