Very suspicious update popups on Windows 10

takias said:

Thanks a lot AndreTen , philc43 and Bree for support and the links.

I ran ADWcleaner and that seems to have have resolved the issue! :)
Let's see.

Hope it'll all go well. Make a check with Malwarebytes and Windows defender offline.

After it, empty Recycle bin and delete any restore points made in this time (you can leave older).

Thanks AndreTen.
I use Windows Defender as my anti-virus for Win10. So I did run that before posting but it detected nothing!!
I did run EsetOnlineScanner after reading about the similar issues from the links you and Bree posted. That found some issues in addition to the ADWCleaner.

I am still wondering how this came to my PC as I am always extra careful about what I am installing on my system...

I found this thread on a German forum also helpful (just in case anyone else finds it useful)
http://www.trojaner-board.de/183772-win10-there-is-a-recommended-update-for-this-pc.html

@ Dencal
I did look up what mshta.exe is but as it's a system file not a virus it turned out to be a dead end for me - that's why I reached out for help on this forum.
May be you genuinely tried to help but it was over imposing and didn't really help me to understand the issue.

Give a man a fish, and you feed him for a day. Teach a man to fish, and you feed him for a lifetime.

You're welcome :)

I meant Windows defender offline scan. You can access it under Settings / Updates and security / Windows defender... at the bottom of the page.