Firefox does not work when AVAST is open, "An error occurred during a.."

Avast Free Antivirus / Premium Security
1

Hello. Recently I updated to Windows 10, and since then, Avast has given me problems with searching on Firefox. Whenever the shields are on, I get this message:

"An error occurred during a connection to www.facebook.com. Peer’s certificate has an invalid signature. (Error code: sec_error_bad_signature) "

Any ideas for a fix?

2

You are missing a crucial piece of information, the avast program version you are using ?

The latest version is 2015.10.3.2225.

https://forum.avast.com/index.php?topic=174286.0

3

You can disable HTTPS scan as a straight-forward solution.
https://forum.avast.com/index.php?topic=172118.msg1240225#msg1240225