why am i getting this error when building engine from source 5.1 - Windows cannot find UEprereqSetUp_x64.exe

why am i getting this error when building engine from source 5.1, it’s always one problem or the other when building from source, it happened with 5.3, and now 5.1. Epic please fix your source codes, they are extremely buggy.

the error is attached. - Windows cannot find UEpereqSetUp_x64.exe

Hey there @gerry_enoma! The source could have failed to pull the file correctly, it might be worth trying to pull again fresh. I haven’t seen this specific issue often, but in most cases the prereqs are either unable to be found (the cmd prompt doesn’t have permission or access to a folder), the file itself is corrupted, or the file is completely missing or quarantined by an antivirus.

Hi @SupportiveEntity the file is in folder, both the X64 and X86 version, no antivirus is installed on my system, and also, i turned off my windows defender, live protection and antivirus. Its just crazy, how much this erros one get when building the source.

It was hell for me with 5.3 wasyed my time and resources, now 5.3 i’m gettting this error. Can you please help in resolvng this? Or can anyine please help?

Epic needs to fix thier stable release of the engine verision, its so buggy. Extremely buggy.

Please any help on here?