Windows 10: I got a system Warning! pop up see screen shot below. Is this warning legit?

Is this warning legit?

:)

 

got a pop up warning of a virus

i was in microsoft edge and got a pop up warning of a virus. voice warned not to shut down. I got recording and screen shot of popup. I went on Microsoft help site.got a agent that just wanted tosell me protection....

even after I told him I had protection . I just wanted to make them aware of theissue.

don't know if occurred as mic edge,or windows or if it is scam..

 

Warning in a pop-up

I received the following warning in a pop-up.

"http://microsoft.com-scrhelp37.info is requesting your username and password. The site says: “0x80070424 Warning: Activation Key Damaged. Your System Has Been Compromised. Call Windows Support Immediately: 844-526-1405 (TOLL-FREE)”

Is 844-526-1405 a valid support number?

 

Infected operating system warning

A message has come up:

Attention!

Infected operating system (4) viruses and your system damaged. It is necessary to clean the system from viruses as quickly as possible.

Do not ignore this warning

There is an OK tab in the dialogue box to click and a screen behind showing a 2 step remedy:

Step 1 - press the button DOWNLOAD and load for free now!

Step 2 - select and open the application to restore The systems!

So it looks really dodgy, but when I go into Windows Defender Security Center, there is a warning sign on Virus & threat protection and it says there are actions recommended in AVG Antivirus, which is what I have installed for viruses, and a link to open
AVG Antivirus, but AVG won't open either from here or from the start button.

Can anyone tell me if this is a genuine warning message or not? It looks wrong and my computer seems to be working as normal as far as I can tell, but I'm concerned that I can't get into AVG to check it.