When you order a server with Windows Server, it is installed in evaluation mode. We provide Windows Server on a "BYOL" (Bring Your Own License) model. This means that you will need to apply a valid license to your server within a few days of receiving your server. This license can be from a Microsoft EA or Open License agreement ("Volume License") or retail license ordered directly from Microsoft. You will need to provide a license that matches the Windows version installed. For example, if you order a dedicated server with Windows Server 2019 Standard, you will need to apply a Windows Server 2019 Standard license.
If you open a support ticket with your license or you have licensing questions, please open a support ticket and we will gladly assist you.