UE4打包Windows 64项目遇未知错误（4.16.1版本）

Hey there! Let’s work through this UE4 packaging snag you’re hitting—since it’s your first time packaging, it’s almost definitely a missing basic setting or a small oversight we can fix quickly. That ExitCode=1 is a generic error, so let’s break down the most common fixes for UE4 4.16.1 on Windows 64-bit:

First, head to Edit > Project Settings > Packaging and verify these:

• Set Build Configuration to Development (Shipping mode has way stricter checks that aren’t necessary for your first build)
• Make sure your Package Directory is a simple path with write permissions (skip folders with spaces, special characters, or cloud storage like OneDrive—they cause permission headaches)
• Toggle on Include Engine Content if your project uses any default assets (like the starter content packs)

• When you go to File > Package Project, make sure you’re explicitly selecting Windows (64-bit) (not the 32-bit option)
• Jump to Edit > Project Settings > Platforms > Windows and ensure Architecture is set to x64
• Double-check you have the right Windows SDK installed: UE4 4.16.1 needs Windows 10 SDK version 10.0.14393.0. You can install this through the Epic Games Launcher—just go to your UE4 4.16.1 library entry, click the three dots, and select "Options" to add the SDK if it’s missing.

ExitCode=1 often pops up when the editor can’t compile blueprints or finds missing assets. Here’s how to hunt those down:

• Open Window > Developer Tools > Blueprint Compiler Results—this will show you any blueprint errors you missed. Fix those first!
• Use Edit > Find in Content to search for "Missing" or "Invalid"—delete or replace any assets that show up (broken meshes, materials, or references will kill your package)
• Do a quick pass through your levels: Make sure every actor has valid components (no missing meshes or unassigned blueprints)

Old cached files can cause weird issues, so let’s start fresh:

• Close the UE4 Editor, then delete the Intermediate and Saved folders in your project directory (don’t worry—these get recreated automatically)
• Reopen the project, then try packaging again via File > Package Project > Windows (64-bit)
• If that still fails, try packaging via command line for more detailed logs:

  C:\Path\To\UE4.16.1\Engine\Build\BatchFiles\RunUAT.bat BuildCookRun -project="C:\Your\Project\Path\YourProject.uproject" -noP4 -platform=Win64 -clientconfig=Development -cook -allmaps -build -stage -package -archive -archivedirectory="C:\Your\Output\Folder"
  

  The command line will spit out way more detail about exactly where the process is failing.

• Sometimes the engine itself has missing files. Open the Epic Games Launcher, go to your Library, find UE4 4.16.1, click the three dots, and select "Verify"—this will fix any corrupted or missing engine files.
• Run both the Epic Games Launcher and UE4 Editor as Administrator—permission issues when writing packaged files are super common, and this fixes most of them.

Pro tip: Scroll back up in your packaging log to look for specific error messages before the ExitCode=1 line. That’s where you’ll find the actual problem (like "Missing mesh for actor X" or "Blueprint failed to compile")—focus on that first, and you’ll fix this in no time!

内容的提问来源于stack exchange，提问作者Tim R