Tech support scams are an industry-wide issue where scammers use scare tactics to trick you into unnecessary technical support services that supposedly fix contrived device, platform, or software problems.
At best the scammers are trying to get you to pay them to "fix" a nonexistent problem with your device or software. At worst they're trying to steal your personal or financial information; and if you allow them to remote into your computer to perform this "fix" they will often install malware, ransomware, or other unwanted programs that can steal your information or damage your data or device.
It is very important to keep the following in mind:
Click here to learn more about Microsoft Technical Support scams and other scams.
Resource: Microsoft Support