If the problem is specific (e.g., stuck at “45% compiling,” “45% uploading,” or an in-game mod stuck at 45% progress), tell me which and paste any error messages or relevant log lines and I’ll give targeted steps.
If you have waited for several hours and the progress has not moved, try these alternative troubleshooting steps: How to fix Unreal Engine 4.18.1 stuck at Initializing 45% hello neighbor mod kit stuck at 45
: If you are using a laptop without a dedicated GPU or have very low RAM, the editor may take significantly longer to load or might fail to launch entirely. Unreal Engine Are you seeing ShaderCompileWorker active in your Task Manager right now? How to fix Unreal Engine 4.18.1 stuck at Initializing 45% 22 Nov 2017 — If the problem is specific (e
: This process can take a very long time (sometimes over an hour) depending on your CPU speed. Check Task Manager Ctrl + Shift + Esc . If you see ShaderCompileWorker How to fix Unreal Engine 4
. While it looks frozen, the engine is actually processing a high volume of assets for the first time. Unreal Engine Why it happens