The official unreal engine reply is
"The oldest version of windows officially supported is Windows 7 service pack 1. Unfortunately with this being the case, we will not be able to provide further support with this issue. Thank you for your time and information
My apologies""
This was for ue4.27
I'm going to assume this being ue5 game won't support w7 either any more.
I do not think i will be able to help unless you want me to package the project for linux as well?