I just installed UEFN in My PC.

UEFN opens for 1 second and closed. Discord Admins said to post here so I did. Please help me soon.

Hi Nik, Welcome to the Forums.

When it closed did a crash dialogue pop up? If so what did it say?

You can also ‘Verify Files’ (3 dots menu in Launcher → Manage) this will run a check that all files downloaded correctly and re-download any corrupted ones.