Asp.net 生成解决方案错误

Question

错误消息:错误 34 “ResolveAssemblyReference”任务意外失败。
Microsoft.Build.Shared.InternalErrorException: MSB0001: Internal MSBuild Error: Unexpected CopyLocal flag.
   在 Microsoft.Build.Tasks.CopyLocalStateUtility.IsCopyLocal(CopyLocalState state)
   在 Microsoft.Build.Tasks.ResolveAssemblyReference.LogResults(ReferenceTable dependencyTable, DependentAssembly[] idealAssemblyRemappings, AssemblyNameReference[] idealAssemblyRemappingsIdentities, ArrayList generalResolutionExceptions)
   在 Microsoft.Build.Tasks.ResolveAssemblyReference.Execute(FileExists fileExists, DirectoryExists directoryExists, GetDirectories getDirectories, GetAssemblyName getAssemblyName, GetAssemblyMetadata getAssemblyMetadata, GetRegistrySubKeyNames getRegistrySubKeyNames, GetRegistrySubKeyDefaultValue getRegistrySubKeyDefaultValue, GetLastWriteTime getLastWriteTime, GetAssemblyRuntimeVersion getRuntimeVersion, OpenBaseKey openBaseKey, CheckIfAssemblyInGac checkIfAssemblyIsInGac, IsWinMDFile isWinMDFile, ReadMachineTypeFromPEHeader readMachineTypeFromPEHeader)
   在 Microsoft.Build.Tasks.ResolveAssemblyReference.Execute()
   在 Microsoft.Build.BackEnd.TaskExecutionHost.Microsoft.Build.BackEnd.ITaskExecutionHost.Execute()
   在 Microsoft.Build.BackEnd.TaskBuilder.<ExecuteInstantiatedTask>d__20.MoveNext() Epoint.DJGMis.Bizlogic

完全无厘头, 网上也没有类似的问题, 求助!

Answer 1

你好，

我建议你排查一下build的log去看看有没有什么错误消息。

应该有什么package安装不了等等的错误。

我感觉是有一些三方的插件，没有copytolocal的选项报错。

另外能告诉我你的项目是哪种项目吗 asp.net web api 还是asp.net core 还是其他？

最后，建议你先尝试新建一个新的项目在build有没有问题。

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Answer 2

错误消息:错误 34 “ResolveAssemblyReference”任务意外失败

Unexpected CopyLocal flag.

可以用工具打开Microsoft.Build.Tasks.CopyLocalStateUtility.IsCopyLocal(CopyLocalState state) 的源代码看下里面写的什么。

猜测的原因，CheckIfAssemblyInGac checkIfAssemblyIsInGac

 可能是对引用到了GAC中的程序集设定了CopyLocal属性导致的失败，将CopyLocal属性设为false再编译试下。

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