Scam Number: (855) 399-1044
Scammer’s Website or Email: ultravewier
Additional information about this scam: I did not get the popup, but a poster states "This is a fake so-called Tech Support scam alert/warning which you are seeing in your browser. “Remember that real error messages from Microsoft, or other big tech companies, never include phone numbers for you to call them.”
https://www.numberguru.com/phone/855/399/1044/
Rhundi says I was hagged.