I have been digging into this AIO situation with Enterprise skus. It seems that Enterprise simply does not have _default (Retail) licensing information in Windows 10. Also, OEM channel seems to lack LTSB versions. You have 2 options for an AIO: 1) use an ei.cfg set to VL Code: [channel] Volume [VL] 1 2) Copy the Volume license.rtf to a new _default folder in the language you're using for setup (for me it's en-us) This is harder than it sounds because you have to takeown and icacls permissions for each folder you create. When I did it on win81 I had to run these commands 5x per index to copy all of the licensing info to the index: Code: takeown /f c:\mount\windows\system32\en-US\Licenses /r /d y & icacls c:\mount\windows\system32\en-US\Licenses /grant Administrators:F /t xcopy /cey e:\win81slipstream\Licenses\* c:\mount\windows\system32\ Before you copy the info, make sure you make the appropriate folder structure and license.rtf or it won't do much. So there. There's your definitive answer for the ei.cfg issues for Windows 10 build 10240 and AIO versions.