Microsoft.com is well known by everyone. Microsoft headquarters is based in Washington, U.S.A. We have been working with Microsoft since January 2016 and we had no problems with their service. Company Name: Microsoft Corporation Support Schedule: 24/7 trough tickets, however, with their huge user base, they can need some time to answer. Microsoft.com and Identity Check: It is possible that if your purchase looks suspicious, the CD key vendors may subject you to a security check. This may be pretty annoying and you may lose time besides having the feeling of injustice and violation of your privacy. Each of our trusted shops have different policies on these security checks and we recommend the following best practices to avoid suspicion: -Do not use proxy / VPN with your purchase. -If you use Paypal, use the same email address to create your account on their site. -If you use a credit card, use the same first and last name in your order on their site.