I haven't bothered to pay attention because our campus agreement makes the specifics of this irrelevant for us. As of October (possibly November), you aren't required to do the in-place upgrade anymore. assuming you have the single Windows 10 Pro volume license required for imaging rights. After that, the workstation could be imaged with volume media. The original language on the upgrade required each workstation first be upgraded via the in-place upgrade to acquire the Windows 10 Pro license. Non-Enterprise volume license customers are eligible for the free upgrade, but the process has to this point been squicky. It is meant more for home and retail licenses. I do not believe the Windows 10 media creation tool is meant to be used to deploy volume licensed seats of Windows 10.

Once your devices are on Windows 10 Pro, you can then use your reimaging rights to reimage using Windows 10 Pro VLSC media/keys.

Technically you must use the in-place upgrade to move from Windows 7/8.1 to Windows 10. What Windows OS did the device have on it before you upgraded to Windows 10? The Media Creation Tool should upgrade you to the version you're entitled to - meaning if you have Windows 8.1 Home you will be upgraded to Windows 10 Home, or if you have Windows 8.1 Pro - you're eligible for Windows 10 Pro. Did I miss something? Also, it shows that it was activated already and I never had to enter a license key. We have licenses for Windows 7 & 8 pro on our VLSC account, not enterprise edition, so I thought this would work. I chose Windows 10 from the drop down on the page. The problem is that it installed Windows 10 Home for some reason. I followed the instructions here and let it load on a new computer with wonodows 8. Anyone else try the Windows 10 media creation tool? It worked pretty seemlessly.

Windows media creation tool not working