I have downloaded unreal engine but the launcher says not installed

i have downloaded unreal engine for 2 time but the launcher says not installed.but when i checked my installed directory it showing 11gb data .how to solve this problem.i have attached images below .please help me soon as possible to launch unreal engine.

no one know?

Hey kannan143-

If the engine is built from source code then it won’t show up in the Launcher, you will have use the .exe file after compiling the engine to launch it. To use the binary version from the launcher you can go to the Library tab and install whichever binary version you’d like.

Cheers