Avast keeps turning on insertion of notes into out-going emails

Avast Free Antivirus / Premium Security
1

Hi all.

First time posting here. I want to permanently turn off the This email has been checked for viruses by Avast antivirus software note that gets attached to my outgoing mail. I know how it should be turned off, i.e.

Setting -> Active Protection -> Mail Shield Customize -> Behavior ->  Insert note into clean message (outgoing) <-- uncheck this and then click ok.

but it doesn’t stay permanently off. It keeps turning itself back on, even in the space of a few hours. Yesterday, I turned if off in the afternoon, and by 10pm it was back on again. Can anyone advise?

I’m using Avast Business Security 2015, programme number 2015.10.2.2505, on a Windows 7 32 bit machine. I’ve updated the programme and the virus definitions fully.

Thanks,
Sean.

2

→ https://forum.avast.com/index.php?board=65.0

3

Oh, sorry, wrong forum. I’ll repost it in the correct forum, as I can’t seem to move it.

4

OK, please do so.