Entry Point Not Found ... UE4Editor-Builsettings.dll not located

Well i have just downloaded UE4 and i’m having this problem … can anyone please give a solution to this?.. the exact wording of the error is like this
“The procedure entry point _cexit could cot be located in the dynamic link library
E:\UE_4.21\Engine\Binaries\Win64\UE4Editor-BuildSettings.dll”
Someone tell me what to do.