Is this a scam? Windows Defender Security Center

[Barbara Canetti]

I received a pop up with verbal message to call the number 1-877-287-6353 b.ecause my computer/network has been blocked. I called the number -- I think Microsoft answered -- and they are using some remote utilities to scan my computer. I hung up but they called back from Washington state. a I am very nervous that this is a scam and I've been had.

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