Did you ever get a phone call from "technical support" telling you there's a problem with your computer? It's probably a scam. Windows Defender engineer Erik Wahlstrom explains some ways to spot and avoid technical support call scams, and what to do if you get a scam call (subtitles available in 38 languages).
Microsoft technical support does not make unsolicited phone calls. If you receive a call requesting your personal or financial information, it's a scam. Hang up and report the incident using this link: https://www.microsoft.com/en-US/concern/scam.
More about online safety:
Staying safe from email and chat scams ⯈ https://community.windows.com/en-us/videos/staying-safe-from-email-chat-scams/amkejUbjpuo
Staying safe from web browser scams ⯈ https://community.windows.com/en-us/videos/staying-safe-from-web-browser-scams/CLh0c3WpcPo
Staying safe from caller ID spoofing ⯈ https://community.windows.com/en-us/videos/staying-safe-from-caller-id-spoofing/heQjO1TRxyk
To learn more about technical support scams and how to avoid them, visit https://www.microsoft.com/en-us/wdsi/threats/support-scams