Microsoft and its product suite are used worldwide and more often businesses revolve around by using Microsoft Office. Microsoft helps other companies and small business owners as well as home users to run their work and leisure activities respectively.
But we can get Microsoft error anywhere or anytime. As an example, I sat on the computer and documenting the report in Microsoft excel sheet then suddenly the power turned off and when it comes back then I was unable to reopen the sheet because it was showing an error. I contact Microsoft support number +1-800-826-8068 to fix the error then they took at my system by remote and fix it with minimal cost. So I hope you get a brief process of them, in a similar manner if you have issues related to Windows then contact Microsoft account support number +1-800-805-7863 to fix your issues.
Also, visit Windows help and support to fix or upgrade your Windows.