: Ironically, running as an Administrator can sometimes prevent the "ShaderCompiler" from launching correctly because only the main engine has elevated rights. Try launching the .exe normally. Solution 4: Hardware and Driver Checks

: Laptops without a dedicated GPU or systems with less than 8GB of RAM may never successfully pass the 45% mark due to memory exhaustion. Troubleshooting Summary Table Why it works Expected Time Just Wait Allows CPU to finish Shader Compilation 15 - 60+ mins Check Task Manager Confirms the app is still calculating, not frozen Delete DDC Forces a clean re-compile of all assets Check Firewall Ensures background worker tasks aren't blocked

: Briefly turn off your Windows Firewall to see if the loading bar advances.

The Hello Neighbor Mod Kit (based on UE 4.19) is resource-intensive.