Talk to a Person microsoft is a major technology company that sells software, electronics and computers around the world. As one of the largest companies in the world, it isn’t surprising that its tech support department gets a lot of calls every day. Why Do People Call Microsoft Tech Support? Customers call Microsoft tech support for a range of reasons, including: Help with installing software or setting up equipment or a device Questions about how to operate software or a device Troubleshooting problems with Microsoft products Assistance with renewing software subscriptions Assistance with filing a warranty claim Referrals to authorized technicians and providers of repair services