Microsoft will never proactively reach out to you to provide unsolicited PC or technical support. If you receive a phone call claiming to be from Microsoft, or see a pop-up window on your PC with a fake warning message and a phone number to call and get your “issue” fixed, it’s better to be safe and not click any links or provide any personal information.
Never call the number provided in the error message. Real Microsoft error messages never include a phone number to call.
If you feel like you’ve been the target of a technical support scam, you can help Microsoft stop cybercriminals by reporting it.