Windows 10: Why Avast got downloaded on my windows 10 of its own?

Avast and a another antivirus got downloaded on my system of its own . Maybe it was due to my windows update or any other reason but i wasn't aware of it untill i saw those two running in background processes and finally fully installed at the end.

:)

 

Windows 10 Tweaks

Pressing “Windows+Pause Break” (it’s up there next to scroll lock) opens the “System” Window.

Windows 10: In the new version of Windows, Explorer has a section called Quick Access. This includes your frequent folders and recent files. Explorer defaults to opening this page when you open a new window. If you’d rather open the usual This PC, with links to your drives and library folders, follow these steps:

• Open a new Explorer window.
• Click View in the ribbon.
• Click Options.
• Under General, next to “Open File Explorer to:” choose “This PC.”
• Click OK

credit to Lifehacker.

 

avast anti-virus

As already mentioned by Bruce:

Avast might have been bundled with a CCleaner update/download....

Suggestion to uninstall Avast and also use their respective removal tool from this

List of anti-malware product removal tools

In addition suggestion to read:
Top 10 Ways PUPs Sneak Onto Your Computer. And How To Avoid Them.

 

Windows 10 forced download

I actually had a client call yesterday with an email problem. when I tried walking him through some steps, he says "Yeah, I don't see that there, but I think it's because it's updated to windows 10. It did that a few weeks ago. I came back in on Monday, and it said Welcome to Windows 10"..... I think I'd throw the computer out the window.