Not sure if anyone can help, and we know this issue has been presented before; Running an x64 box we’ve searched the interwebs and tried every solution out there we could find. Win 10 completely up to date, all .Net’s installed, all Redistributables installed, folder permissions granted, attempted manually running Prereqs w Admin, and finally attempted running MS’s “Program Install and Uninstall Troubleshooter” which did find the Prereqs attempted install but couldn’t resolve the issue. Just looking for anything we might have missed. We’re still able to launch UE4Editor.exe manually.
Since it doesn’t seem like anyone aside from us are having this issue; possibly an isolated issue.