Download the ISO and note the retail product key provided in your keys dashboard.
If you are looking to download the evaluation version for testing, you can use the Microsoft Evaluation Center . Windows Server 2016 Standard Iso Not Evaluation
Also check the system properties (Right-click This PC > Properties) – there should be no “Evaluation copy. Expires in X days” watermark. Download the ISO and note the retail product
No. Microsoft requires a Volume License agreement, MSDN subscription, or purchase of a retail key to access the production ISO. Windows Server 2016 Standard Iso Not Evaluation