The UE4 project is stuck at 83% when it starts - Compiling shader

My project is using the 4.27 source code version, and it could be started normally yesterday. Today the project got stuck at “83% - Compiling shaders” when the project started, and it’s been around for 2 hours with no change.
How can I solve this problem?

Hey there @one_bit_tiff! Welcome to the community!

Sounds like it might be getting stuck on some of the editor shaders, kind of looking like a possible DX issue. I know a number of these questions will be redundant but are standard to ask. A few questions to get things started:

  • How deep are you in this project?
  • Have you updated your graphics drivers?
  • Is there any information in the logs generated (if any)?
  • If so, can you add Editor Symbols for Debugging to your install so we can get a better idea of what is going wrong?
  • Have you recently updated windows? (we’ve had a couple of fun ones lately.)

thank you very much! The problem is solved! I updated my Windows OS last week, and after I updated the latest graphics card driver, the compiled shaders started working fine. thank you very much for your help!

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