Since updating to Avast 17.7.2314 (build 17.7.3660.244) I keep getting this annoying screen re-appear on my desktop.

https://i.imgur.com/PipiVdf.jpg

Is there anyway to get rid of this behaviour or is this the shape of things to come?

http://screencast-o-matic.com/screenshots/u/Lh/1509922255967-42066.png

Maybe this will help: https://forum.avast.com/index.php?topic=204972.msg1405903#msg1405903

Thank you, did select Free, and then popped up again a few days later, but hopefully after selecting free again, it’s taken care of for good now

I too have clicked the Select option under Avast Free Antivirus. The problem is this same window re-appears after a couple of days.

To confirm, it is now 2 days since my original post and the same windows has suddenly re-appeared.

Repair Avast:
Control Panel> Program and Features (Add/remove program)>Select Avast> Select Repair. Reboot when completed
https://www.avast.com/faq.php?article=AVKB204

If Repair doesn’t fix the problem, try the following:
Clean Install of Avast:
https://goo.gl/4Ptzkf
If you need additional help with the Clean Install, watch this:
https://youtu.be/p-h3myRD51A