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

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.