Internet not working with Avast

If I have Avast active my internet completely stops working, this start two or three days ago. What do I do? 100% Avast problem since it works perfectly, like now when I have the antivirus disabled.

Perform a clean installation with the off-line installer for the latest avast version.

Here’s the information Eddy keeps forgetting to pass along:

Repair Avast:
Control Panel> Program and Features (Add/remove program)>Select Avast> Select Repair. Reboot when completed
https://www.avast.com/faq.php?article=AVKB204
If Repair doesn’t fix the problem, try the following:
Clean Install of Avast:
https://goo.gl/4Ptzkf

Thank you, I have this problem yesterday