Windows 10 LTSC 2015 didn't block this in-place upgrade path even though it isn't supported. This issue was corrected in the Windows 10 LTSC 2016 release. Windows 10 LTSC 2016 only allows data-only and clean install options.
Windows 10 LTSC 2015 didn't block this in-place upgrade path even though it isn't supported. This issue was corrected in the Windows 10 LTSC 2016 release. Windows 10 LTSC 2016 only allows data-only and clean install options.