My company has downloaded the enterprise .iso from the Volume Licensing site and are trying to do an in-place upgrade on a few PCs to test, but it is not giving us the option to Keep personal files and apps. Only lets us do a fresh install or Keep personal files only. At the bottom it says because you're installing an edition of Windows that's different than the one you're currently using.
We currently have enterprise edition of W10 21H2 and W10 1809 throughout our environment. We tested on one machine doing a fresh install and noticed it installed W11 Pro, not enterprise. So that makes sense why we get the "you're installing a different edition" error. From my understanding all these versions are packaged in that iso. Of the 5 computers we were testing, the first person that ran the installer had no issue. It installed and kept apps and files and is Enterprise version. But the others we have tested are having the issue. I have tried configuring the EI.CFG file, but that did not help. Running the setup.exe from the sources folder allows us to select what version to install, but then errors out after selecting the version and says "This upgrade path is not supported. Please close Setup and re-launch from the root of the media or go back and pick a different installation choice."
We are completely baffled by this and would appreciate any suggestions.