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Hello Neighbor Mod Kit Stuck At 45 — High-Quality & Fast

: Find the folder named DerivedDataCache and delete it.

Unreal Engine 4 is a heavy development environment. If your computer relies solely on integrated graphics (common in non-gaming laptops) instead of a dedicated graphics card (like NVIDIA or AMD), the editor may genuinely fail to load past this point.

When you launch the mod kit for the very first time, or after a major update, the engine must compile thousands of shaders to map the textures, lighting, and materials used in Hello Neighbor. This process is incredibly CPU-intensive. To the user, the progress bar appears totally frozen, but your computer is actually processing data in the background.

After trying all ten steps, if your loading bar is still frozen at 45%, you might be facing a hardware or software conflict that has no public fix. The Hello Neighbor Mod Kit has not received a major update in years. Some users report that specific anti-virus programs (Avast, McAfee) quarantine the 45% compiler process. Try disabling real-time protection temporarily.

Corrupted temporary files within your mod project are a common culprit.

: Ensure you have the latest version of the Unreal Engine installed via the Epic Games Launcher, as some users reported this resolved stuck installs.