Blueprint lost link to C++ class after each restart

Thanks for all your reply !

So i’m not the only one that have this happened to him. (Wich is no good news cause now probability are higher that the problem is from the engine and that we cannot do anything except hoping it will be fix in 5.6.1)


Since my first post, I tested new stuff.

First, I tried to installed an older version (5.5.4) and do the same thing, and it work perfectly. So it really happens only in 5.6.0

I also tried to build the editor myself from the Unreal Github Repository. And it still got the same issue.

As the last solution, I’ve format my PC entierly, install Visual Studio with all necessary dependencies and Epic Games with Unreal Engine 5.6 and tried as my last hope. And I still got the issue.


So now, I got no clue what could be the issues. I guess I’ll go learn on 5.5.4, but that still bother me cause 5.6 got a nice course that I really liked for begginner in the documentation, that other UE5 version doesn’t have.

As a last hope I’ll drop my full computer config in here, in case it come from there (I have a AMD processor, so maybe it come from lack of compatibility) :

  • Windows 11
  • AMD Ryzen 9 799X 12-Core Processor
  • NVIDIA GeForce RTX 4070 12Go VRAM
  • 32Go RAM

For the other person that have the same issue, do you have similar PC ?


I’ll let the topic open, in case someone find a fix, cause I would still prefer to use 5.6 to learn (As it’s the version of the official Getting Started course of Unreal)

1 Like