I DONT UNDERSTAND BECAUSE THE LOADING GOES REAL GOOD BUT UE4 FAILED LAUNCH
There can be many reasons for the editor to fail to launch.
Consider providing a bit more info about your system; perhaps the hardware does not meet the requirements.
EVERYTHING WAS GOOD (THE DOWNLOAD…) BUT FAILED
AT LAUNCH
Again, you’d need to post specs or dxdiag of your machine. Do you get any errors?
Also, on the internetz, CAPS LOCK is the equivalent of shouting. You’re shouting at people for no reason ;p