Find an authentic Certificate of Authenticity (COA) is crucial when buying Windows 10/11 Pro or Home key to activate or license your product, especially in order to confirm that you're getting a legitimate product. The COA, usually provided with retail and OEM licenses, is a physical or electronic proof that the software you're buying is authentic. Here are the 10 most important points to keep in mind when handling COAs. 1. Be aware of what a COA is. A Certificate of Authenticity is a label … [Read more...]