Here's a sample post that you could use:
If you want to continue using Windows Server 2016 Standard after the evaluation period expires, you'll need to purchase a license and upgrade to the full version.
"Windows Server 2016 Standard Evaluation product key: VK7JG-NPHTM-C97JM-9MPGT-3V66T
Note that this is for evaluation purposes only and will expire after 180 days. For full functionality, consider purchasing a license and upgrading to the full version."
slmgr.vbs /ipk VK7JG-NPHTM-C97JM-9MPGT-3V66T slmgr.vbs /ato
To activate, open Command Prompt as admin and run:
Windows Server 2016 Standard Evaluation is a version of Windows Server 2016 that can be used for evaluation purposes. It allows users to try out the features and functionalities of Windows Server 2016 Standard edition for free, for a limited period of time (usually 180 days).
You're looking for a post related to "Windows Server 2016 Standard Evaluation product key free". Here's some information that might be helpful: