My 4.24.3 version of unreal is not launching properly. When I hit the launch button it turns grey for about 5’’ and says “launching/ please wait” and then it turns yellow again as if nothing happened.
try to uninstall Unreal Engine 4.24.3.
If you can’t do it from the launcher, the go to the folder where it is installed and delete the folder. the reopen the launcher and install it again.