My ISP is blocking Avast updates?

Greetings,
As the title indicate I changed my ISP provider and now all my updates are blocked because of it. I need to run avast secureLine vpn to get my updates? is there an alternative or a fix to this issue?

You replied to yourself
Talk to your ISP
(It worked for me when an ISP had problems with Grand Theft Auto Online)

What error messages are you getting ?