Avg blocks thunderbird

When trying to open Thunderbird  I get a screen which asks me to set up a thunderbird email from scratch. and cannot access my emails on thunderbird. It seem that this is because AVG has quarantined file prefs,js because malware VBS:Gamaredon-c has been detected. I wish to know what to do to remedy this. I looked at the problem on another computer  with AVG disabled but windows 10 operating  and all was OK with thunderbird so I wondered if there is a real threat
Russell Horne

Hello Rusell, 

We are sorry to know that. We will check and help you to clarify it. 
Could you please share us the screenshot (https://support.avg.com/SupportArticleView?urlname=AVG-Create-screenshot) of the block message received from AVG? 
You can post the screenshot here in your topic. Click on Answer & then click on the Image [mountain symbol] & follow the instructions. Thanks in advance.

Hello Rusell, 

We are sorry to know that. We will check and help you to clarify it. 
Could you please share us the screenshot (https://support.avg.com/SupportArticleView?urlname=AVG-Create-screenshot) of the block message received from AVG? 
You can post the screenshot here in your topic. Click on Answer & then click on the Image [mountain symbol] & follow the instructions. Thanks in advance.