The forum over at AskWoody has some interesting takes on getting ESU working on Windows 10.
Source: Topic: How to force the Windows 10 ESU @ AskWoody
reg.exe add “HKLM\SYSTEM\CurrentControlSet\Policies\Microsoft\FeatureManagement\Overrides” /v 4011992206 /t REG_DWORD /d 2 /f