title: Fail OmniSharp MSBuild ProjectManager
body: <p>Note: I already search other similar question related to OmniSharp issue, could not find proper solution.Intellisense of vs code c# not working. I uninstall the c# extension and install again but it can not resolve my issue.I also install previous version of csharp 1.15.2 but it does not work. I attach my log info </p>
  
  <blockquote>
    <p>My dotnet --info is as follow</p>
  </blockquote>
  
  <pre><code>.NET Core SDK (reflecting any global.json):
   Version:   3.0.100   
   Commit:    04339c3a26
  
  Runtime Environment:    
   OS Name:     Windows   
   OS Version:  10.0.18362
   OS Platform: Windows   
   RID:         win10-x64
   Base Path:   C:\Program Files\dotnet\sdk\3.0.100\
  
  Host (useful for support):
    Version: 3.0.0
    Commit:  7d57652f33
  
  .NET Core SDKs installed:
    1.1.14 [C:\Program Files\dotnet\sdk]
    3.0.100 [C:\Program Files\dotnet\sdk]
  
  .NET Core runtimes installed:
    Microsoft.AspNetCore.All 2.1.13 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.All]
    Microsoft.AspNetCore.App 2.1.13 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
    Microsoft.AspNetCore.App 3.0.0 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
    Microsoft.NETCore.App 1.0.16 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
    Microsoft.NETCore.App 1.1.13 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
    Microsoft.NETCore.App 2.1.13 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
    Microsoft.NETCore.App 3.0.0 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
    Microsoft.WindowsDesktop.App 3.0.0 [C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App]
  
  To install additional .NET Core runtimes or SDKs:
    https://aka.ms/dotnet-download
  </code></pre>
  
  <blockquote>
    <p>My log is as follow</p>
  </blockquote>
  
  <pre><code>Starting OmniSharp server at 10/12/2019, 8:51:54 am
      Target: e:\Nebula Materials\Nebula\Nebula.sln
  
  OmniSharp server started.
      Path: C:\Users\aliimran.MREMIND\.vscode\extensions\ms-vscode.csharp-1.21.8\.omnisharp\1.34.8\OmniSharp.exe
      PID: 17160
  
  [info]: OmniSharp.Stdio.Host
          Starting OmniSharp on Windows 6.2.9200.0 (x64)
  [info]: OmniSharp.Services.DotNetCliService
          DotNetPath set to dotnet
  [info]: OmniSharp.MSBuild.Discovery.MSBuildLocator
          Located 2 MSBuild instance(s)
              1: Visual Studio Community 2019 16.3.29411.108 - "C:\Program Files (x86)\Microsoft Visual Studio\2019\Community\MSBuild\Current\Bin"
              2: StandAlone 16.3 - "C:\Users\aliimran.MREMIND\.vscode\extensions\ms-vscode.csharp-1.21.8\.omnisharp\1.34.8\.msbuild\Current\Bin"
  [info]: OmniSharp.MSBuild.Discovery.MSBuildLocator
          Registered MSBuild instance: Visual Studio Community 2019 16.3.29411.108 - "C:\Program Files (x86)\Microsoft Visual Studio\2019\Community\MSBuild\Current\Bin"
  [info]: OmniSharp.Cake.CakeProjectSystem
          Detecting Cake files in 'e:\Nebula Materials\Nebula'.
  [info]: OmniSharp.Cake.CakeProjectSystem
          Could not find any Cake files
  [info]: OmniSharp.MSBuild.ProjectSystem
          Detecting projects in 'e:\Nebula Materials\Nebula\Nebula.sln'.
  [info]: OmniSharp.MSBuild.ProjectManager
          Queue project update for 'e:\Nebula Materials\Nebula\Nebula.csproj'
  [info]: OmniSharp.Script.ScriptProjectSystem
          Detecting CSX files in 'e:\Nebula Materials\Nebula'.
  [info]: OmniSharp.Script.ScriptProjectSystem
          Could not find any CSX files
  [info]: OmniSharp.WorkspaceInitializer
          Invoking Workspace Options Provider: OmniSharp.Roslyn.CSharp.Services.CSharpFormattingWorkspaceOptionsProvider, Order: 0
  [info]: OmniSharp.MSBuild.ProjectManager
          Loading project: e:\Nebula Materials\Nebula\Nebula.csproj
  [info]: OmniSharp.WorkspaceInitializer
          Invoking Workspace Options Provider: OmniSharp.Roslyn.CSharp.Services.RenameWorkspaceOptionsProvider, Order: 100
  [info]: OmniSharp.WorkspaceInitializer
          Invoking Workspace Options Provider: OmniSharp.Roslyn.CSharp.Services.EditorConfigWorkspaceOptionsProvider, Order: 200
  [info]: OmniSharp.WorkspaceInitializer
          Configuration finished.
  [info]: OmniSharp.Stdio.Host
          Omnisharp server running using Stdio at location 'e:\Nebula Materials\Nebula' on host 18328.
  [warn]: OmniSharp.MSBuild.ProjectManager
          Failed to load project file 'e:\Nebula Materials\Nebula\Nebula.csproj'.
  e:\Nebula Materials\Nebula\Nebula.csproj(1,1)
  Microsoft.Build.Exceptions.InvalidProjectFileException: The imported project "C:\Program Files (x86)\Microsoft Visual Studio\2019\Community\MSBuild\Current\Bin\Microsoft.Common.CurrentVersion.targets" was not found. Confirm that the path in the &lt;Import&gt; declaration is correct, and that the file exists on disk.  C:\Program Files (x86)\Microsoft Visual Studio\2019\Community\MSBuild\Current\Bin\Microsoft.Common.targets
     at Microsoft.Build.Shared.ProjectErrorUtilities.ThrowInvalidProject(String errorSubCategoryResourceName, IElementLocation elementLocation, String resourceName, Object[] args)
     at Microsoft.Build.Shared.ProjectErrorUtilities.ThrowInvalidProject[T1](IElementLocation elementLocation, String resourceName, T1 arg0)
     at Microsoft.Build.Evaluation.Evaluator`4.ExpandAndLoadImportsFromUnescapedImportExpression(String directoryOfImportingFile, ProjectImportElement importElement, String unescapedExpression, Boolean throwOnFileNotExistsError, List`1&amp; imports)
     at Microsoft.Build.Evaluation.Evaluator`4.ExpandAndLoadImportsFromUnescapedImportExpressionConditioned(String directoryOfImportingFile, ProjectImportElement importElement, List`1&amp; projects, SdkResult&amp; sdkResult, Boolean throwOnFileNotExistsError)
     at Microsoft.Build.Evaluation.Evaluator`4.ExpandAndLoadImports(String directoryOfImportingFile, ProjectImportElement importElement, SdkResult&amp; sdkResult)
     at Microsoft.Build.Evaluation.Evaluator`4.EvaluateImportElement(String directoryOfImportingFile, ProjectImportElement importElement)
     at Microsoft.Build.Evaluation.Evaluator`4.PerformDepthFirstPass(ProjectRootElement currentProjectOrImport)
     at Microsoft.Build.Evaluation.Evaluator`4.EvaluateImportElement(String directoryOfImportingFile, ProjectImportElement importElement)
     at Microsoft.Build.Evaluation.Evaluator`4.PerformDepthFirstPass(ProjectRootElement currentProjectOrImport)
     at Microsoft.Build.Evaluation.Evaluator`4.EvaluateImportElement(String directoryOfImportingFile, ProjectImportElement importElement)
     at Microsoft.Build.Evaluation.Evaluator`4.PerformDepthFirstPass(ProjectRootElement currentProjectOrImport)
     at Microsoft.Build.Evaluation.Evaluator`4.EvaluateImportElement(String directoryOfImportingFile, ProjectImportElement importElement)
     at Microsoft.Build.Evaluation.Evaluator`4.PerformDepthFirstPass(ProjectRootElement currentProjectOrImport)
     at Microsoft.Build.Evaluation.Evaluator`4.EvaluateImportElement(String directoryOfImportingFile, ProjectImportElement importElement)
     at Microsoft.Build.Evaluation.Evaluator`4.PerformDepthFirstPass(ProjectRootElement currentProjectOrImport)
     at Microsoft.Build.Evaluation.Evaluator`4.EvaluateImportElement(String directoryOfImportingFile, ProjectImportElement importElement)
     at Microsoft.Build.Evaluation.Evaluator`4.PerformDepthFirstPass(ProjectRootElement currentProjectOrImport)
     at Microsoft.Build.Evaluation.Evaluator`4.Evaluate(ILoggingService loggingService, BuildEventContext buildEventContext)
     at Microsoft.Build.Evaluation.Project.Reevaluate(ILoggingService loggingServiceForEvaluation, ProjectLoadSettings loadSettings, EvaluationContext evaluationContext)
     at Microsoft.Build.Evaluation.Project.ReevaluateIfNecessary(ILoggingService loggingServiceForEvaluation, ProjectLoadSettings loadSettings, EvaluationContext evaluationContext)
     at Microsoft.Build.Evaluation.Project.Initialize(IDictionary`2 globalProperties, String toolsVersion, String subToolsetVersion, ProjectLoadSettings loadSettings, EvaluationContext evaluationContext)
     at Microsoft.Build.Evaluation.Project..ctor(String projectFile, IDictionary`2 globalProperties, String toolsVersion, String subToolsetVersion, ProjectCollection projectCollection, ProjectLoadSettings loadSettings, EvaluationContext evaluationContext)
     at Microsoft.Build.Evaluation.ProjectCollection.LoadProject(String fileName, IDictionary`2 globalProperties, String toolsVersion)
     at OmniSharp.MSBuild.ProjectLoader.EvaluateProjectFileCore(String filePath) in D:\a\1\s\src\OmniSharp.MSBuild\ProjectLoader.cs:line 129
     at OmniSharp.MSBuild.ProjectLoader.BuildProject(String filePath) in D:\a\1\s\src\OmniSharp.MSBuild\ProjectLoader.cs:line 72
     at OmniSharp.MSBuild.ProjectFile.ProjectFileInfo.Load(String filePath, ProjectIdInfo projectIdInfo, ProjectLoader loader) in D:\a\1\s\src\OmniSharp.MSBuild\ProjectFile\ProjectFileInfo.cs:line 98
     at OmniSharp.MSBuild.ProjectManager.LoadOrReloadProject(String projectFilePath, Func`1 loader) in D:\a\1\s\src\OmniSharp.MSBuild\ProjectManager.cs:line 308
  
  [fail]: OmniSharp.MSBuild.ProjectManager
          Attempted to update project that is not loaded: e:\Nebula Materials\Nebula\Nebula.csproj
  </code></pre>