Guys, I just learned something the hard way that some of you may have already known. Because of it, I will be doing a factory reset on my laptop back to Windows 8.1 from Windows 10.

Here's what happened:

I upgraded my brand new Dell laptop to Windows 10. Then, stupidly, I chose the option in Windows Updates Advanced Options to opt in to Insider Builds.

Mistake. It "upgraded" me to Insider build 10532 which put a watermark on my screen, and what's worse, when I run winver, I am told that my OS will expire 7/15/2016.

So, I try to opt out of Insider Builds and can't, not without starting over, which I will do.

This is unacceptable.

Just a heads up for those who may be unaware. I'd prefer not to have an expiration date on my "supposedly" free upgraded OS. Let alone a watermark.

All the while the Win10 install is fully activated, BTW.