Unreal Engine 4.27.2 launched failed. My PC is win11, it can launch4.26

when I launch UE4.27.2, it will Get stuck at 45% or 75% and other few cases.Till to now ,I have not even see UE4.27.2 start screen. But I can launch 4.26.2. By the way, my pc is win11, hope you can help me, thanks

How long have you waited for the project to launch in the 4.27.2 version?

Try to create a blank project and see if it starts.

Thanks, I didn’t launch any projects, because the software wouldn’t open, I didn’t have a chance to create projects, I waited all night for the software, and when I woke up in the morning, it was still stuck at 45% or 75%

I suggest reinstalling the launcher and the engines or use the verify the engine:

Thank you, I have reinstalled once, and I will try to verity the engine.If that doesn’t work, I’ll use 4.26 or later.

The reason is that I installed it on an external SSD, so it can’t be launched.