Best method will help to understand how to prevent avast pop ups
Open Avast user interface.
Go to Settings
Click Update
Program
If you don’t want to update the current version of Avast, then you can disable pop-ups by opening the Avast user interface.
Go to Settings
Select Manual update.
I wish you will get rid of the avast popups and other issues. If you are still facing any issue then you can connect with us 24*7 for technical support. Our expert is here solving firewall settings chrome, brother printer offline windows 10 and many more.