Firefox Issue! (Your browser is being managed by your organization)

Hello,

I’m using Avast Premium v20.2.5130.570.

I disabled QUIC/HTTP3. It has fixed for Chrome (v81).

So what should I do for Firefox (v75)? Problem continues there.

Thanks in advance.

https://i.hizliresim.com/wUQh7v.jpg

https://forum.avast.com/index.php?topic=233119.msg1543278#msg1543278