Windows warning

Hello Gene,
I am sorry to hear about this. Have you installed AVG Free Antivirus in your PC? Please let us know whether you encounter this pop up in any particular browser (like Google chrome, Microsoft Edge) or in the desktop of your PC. Please help us by providing the screenshot of the pop up to assist further.
To create a screenshot, please click here .

Alan,
Here is a screen shot of pop up we are seeing on our laptop while browsing in google chromeUser-added image

Yes, I have AVG on my pc as well as laptop. Only see the pop up while using googlr chrome.

Have an HP laptop, keep seeing this warning of virus need to call windows support. Any way to block this?

Hello Gene,
I am sorry to hear about this. Have you installed AVG Free Antivirus in your PC? Please let us know whether you encounter this pop up in any particular browser (like Google chrome, Microsoft Edge) or in the desktop of your PC. Please help us by providing the screenshot of the pop up to assist further.
To create a screenshot, please click here .

Gene, For your info, just in case that you are unaware, you can post the screenshot here in your topic. Click on 'Answer' & then click on the 'Image' [mountain symbol] & follow the instructions. 
AVG Guru

Alan,
Here is a screen shot of pop up we are seeing on our laptop while browsing in google chromeUser-added image

Gene, Your screenshot is visible on the Community.
AVG Guru

Gene,
Thank you for providing the screenshot. I would like to inform that this is a fake virus alert. Please do not call that number or grant remote access of your PC to unknown sources. This issue could be caused due to an adware application or unwanted extension installed in Chrome.

I would request you to uninstall unknown add ons and extensions from Chrome and also check for any unwanted applications in control panel and uninstall them. Please also consider to reset Chrome to default settings as suggested in this article https://support.google.com/chrome/answer/3296214?hl=en .

Thank you for confirming it.
Please share the screenshot of the pop up if you encounter it again. This will help us to check and assist further.