Some agencies have reported receiving suspicious phone calls from “Microsoft.” These calls are not from Microsoft.
Microsoft will NEVER call you unless you ask them to do so. If you don’t call Microsoft for help, they won’t call you to help you. Microsoft might call you about new products or if you register for events. In these cases, they provide you information and never provide information about your computer.
Calls usually start by wanting the user to think they have viruses and instruct them to visit a website. Users should NOT visit the website, provide any information, or request the fake "Microsoft" company to send any email or link with the information.
Read about this issue from others: