UNREAL报错MSB3073解决方案

翻了几个国内的解答，发现没有找到我想要的。翻了翻英文网站发现了。

UE5.1 VS2022 C++ Build Error With MSB3073 - Development / Platform & Builds - Epic Developer Community Forums

嗨！

我认为我找到问题的原因了。如果你的 Unreal Engine 5 启用了 Live Coding 集成功能，这可能会导致 Mutex（互斥量） 冲突。

尝试 禁用 Live Coding，或者在编辑器（VS2022）或游戏中按 Ctrl + Alt + F11，然后重新编译。

这条信息出现在 Unreal Engine 5 的日志文件 中：

Checking for live coding mutex: Global\LiveCoding_D++Epic Games+UE_5.1+Engine+Binaries+Win64+UnrealEditor.exe
Unable to build while Live Coding is active. Exit the editor and game, or press Ctrl+Alt+F11 if iterating on code in the editor or game
BuildException: Unable to build while Live Coding is active. Exit the editor and game, or press Ctrl+Alt+F11 if iterating on code in the editor or game
at UnrealBuildTool.HotReload.CheckForLiveCodingSessionActive(TargetDescriptor TargetDescriptor, TargetMakefile Makefile, BuildConfiguration BuildConfiguration, ILogger Logger) in D:\build++UE5\Sync\Engine\Saved\CsTools\Engine\Source\Programs\UnrealBuildTool\System\HotReload.cs:line 231
at UnrealBuildTool.BuildMode.Build(TargetMakefile[] Makefiles, List`1 TargetDescriptors, BuildConfiguration BuildConfiguration, BuildOptions Options, FileReference WriteOutdatedActionsFile, ILogger Logger) in D:\build++UE5\Sync\Engine\Saved\CsTools\Engine\Source\Programs\UnrealBuildTool\Modes\BuildMode.cs:line 526
at UnrealBuildTool.BuildMode.Execute(CommandLineArguments Arguments, ILogger Logger) in D:\build++UE5\Sync\Engine\Saved\CsTools\Engine\Source\Programs\UnrealBuildTool\Modes\BuildMode.cs:line 242
at UnrealBuildTool.UnrealBuildTool.Main(String[] ArgumentsArray) in D:\build++UE5\Sync\Engine\Saved\CsTools\Engine\Source\Programs\UnrealBuildTool\UnrealBuildTool.cs:line 648
WriteFileIfChanged() wrote 0 changed files of 0 requested writes.