Elusive invader on my Win10 desktop

[ChuckN]

I recently had a fake warning page pop up, saying I had malware and should call "Microsoft". I didn't. Also when I click on a link, I often get not only what I expect, but an additional tab to some additional site. I did a full scan with Defender. I ran a few free antivirus programs. I finally downloaded and run a full check with McAfee. Nothing found in any of my scans. No idea what to try next......

 

[Neemobeer]

If it was while in a browser than it was likely just a browser alert which people use to trick you. There wouldn't be anything on your computer in that case

 

[ChuckN]

If it was while in a browser than it was likely just a browser alert which people use to trick you. There wouldn't be anything on your computer in that case

hmmmm....... I just don't know

 

[davehc]

Deleting you browser history might (?) get rid of it

 

[HenkB]

The browser add-on Ghostery, may block them.
Go into settings of your browser, you can swich off a lot.

 

[jeffbeish]

Try SuperAntiSpyware at: Download SUPERAntiSpyware Professional X Edition & Free Editions or Malwarebytes

 

[Neemobeer]

If it looked even remotely like this then there's literally nothing to do. It's someone leveraging browser technology to try and scam you. Close the page your on and move on.

 

[ChuckN]

Try SuperAntiSpyware at: Download SUPERAntiSpyware Professional X Edition & Free Editions or Malwarebytes

that's one that I tried; it runs now every time I start the computer