Hi, I installed UE4.20 , UE4.23 and UE4.27
I have created a project using UE4.27 and renamed the folder of the Engine from UnrealEngine-4.27-Release to UE4.27 and now when I run my project , it needs to select the engine version.
From the list I only see UE4.20 and UE4.23 , the engine version 4.27 is missing from the list.
– I need to re-build the engine because of changing its folder name?
– How to fix this crazy bug?
Thank you for any consultation.
you don’t need to rebuild the engine, but you need to make an entry of the engine directory in the registory. yourgame.uproject reads engine version directories from the registory.
To add your engine in the registory just follow these steps:
1: Browse the engine directory.
2: Run the engine, when it loads successfully close it.
3: Browse to your project and run it, if ask for select version , you will now see your engine in the list while you already make an entry in the registory.
hope it helps, cheers!
Thank You for help Sir, I was getting things ready for a rebuild of the engine 
it was so simple to handle this.
yes Everytime you rename your engine directory, run it before running or selecting the engine verison fo the project