Microsoft intentionally hides the non-evaluation ISOs from public download. They want you to either:

The is not a mythical file – it is a production-grade operating system image available through proper licensing channels. While evaluation ISOs are excellent for learning, proof-of-concepts, or short-term testing, trusting them for domain controllers, file servers, or application hosts is a ticking time bomb.

provide links for customers to download matching ISO files directly for PowerEdge servers. Microsoft Learn Converting Evaluation to Full Standard

Open PowerShell as an Administrator and run: DISM /online /Get-CurrentEdition It should return ServerStandardEval . Step 2: Check target editions

Starting with Windows Server 2016, you generally cannot convert a "Server Core" evaluation directly to a "Desktop Experience" full version. Microsoft Learn Create your own "Non-Evaluation" ISOs

VLSC downloads are multi-edition ISOs. They contain both Standard and Datacenter, both Core and Desktop Experience. This is the gold standard for “non-evaluation.”

You will likely see ServerStandardEval or ServerDatacenterEval .