Unreal Engine 5.3自动生成VS2022 C++项目编译错误求助

• Lingering Unreal Processes: Closing the editor doesn’t always terminate all associated background tools (like UnrealBuildTool). These processes lock critical files, preventing Visual Studio from compiling.

  • Fix: Open Task Manager, end all processes named UnrealEditor.exe, UnrealBuildTool.exe, and UnrealVersionSelector.exe. Reopen VS and compile.

• Out-of-Sync VS Project Files: The auto-generated Visual Studio solution can get out of sync if the editor closed unexpectedly or didn’t finish updating files.

  • Fix: Right-click your project’s .uproject file, select Generate Visual Studio project files. Wait for the process to finish, then open the refreshed solution and compile.

• Incomplete UE5.3 Installation: Missing C++ build components or Windows SDK in your Unreal Engine installation can break compilation.

  • Fix: Open the Epic Games Launcher, go to Unreal Engine > Library > 5.3 > Options. Ensure "C++ Build Tools" and "Windows SDK" are checked. Install any missing components, then restart VS.

• VS 2022 Workload/Toolchain Mismatch: Visual Studio might lack the required game development workload or use an incompatible toolchain.

  • Fix: Launch the Visual Studio Installer, verify the Game development with C++ workload is installed (including the Unreal Engine integration component). Go to your VS project’s properties, confirm the platform toolset is set to v143 (UE5.3’s default).

• Restricted Project Folder Permissions: Storing the project in a protected directory (like Program Files) blocks write access needed for compiling.

  • Fix: Move the entire project folder to a location with full read/write permissions (e.g., C:\Users\[YourName]\Documents\Unreal Projects). Regenerate project files and recompile.

• Corrupted Cache Files: Unreal’s Intermediate and Saved folders can accumulate corrupted data that interferes with builds.

  • Fix: Delete the Intermediate and Saved folders in your project directory. Regenerate project files, then compile the solution again.

内容的提问来源于stack exchange，提问作者JungW