system
1
This happened a couple of weeks ago and I completely uninstalled avast and reinstalled and everything was working fine. Today when I right clicked on the avast icon it was greyed out again. Is there anything I can do without going through the whole process of uninstalling and reinstalling. I did a repair of avast and that didn’t fix it. Thanks
Show last Popup Message is only available if there’s a message available to display.
In my case and probably yours also, there haven’t been any popups since the last time you rebooted.
http://www.screencast-o-matic.com/screenshots/u/Lh/1404859317276-46884.png
Hope that helps. 
DavidR
3
The message won’t be displayed if you have rebooted since the last message was displayed.
Same on my system, the option is greyed out most of the time as I no longer have avast display the auto update notifications.
system
4
Thanks, I will check it after I receive another update.