Restore fails with "The given key '0' was not present in the dictionary"

[JanKrivanek]

NuGet Product Used

dotnet.exe

Product Version

9.0.200

Worked before?

Not sure

Impact

None

Repro Steps & Context

msbuild_binlog.txt

C:\tmp\trash\testProj\nunit> dotnet new nunit
The template "NUnit 3 Test Project" was created successfully.

Processing post-creation actions...
Restoring C:\tmp\trash\testProj\nunit\nunit.csproj:
C:\Program Files\dotnet\sdk\9.0.200\NuGet.targets(175,5): error : The given key '0' was not present in the dictionary.
Restore failed.
Post action failed.
Manual instructions: Run 'dotnet restore'

 C:\tmp\trash\testProj\nunit> dotnet restore
    C:\Program Files\dotnet\sdk\9.0.200\NuGet.targets(175,5): error : The given key '0' was not present in the dictionary.

Restore failed with 1 error(s) in 0.6s

Works OK in other paths

Verbose Logs

For more info - Binlog attached


> dotnet restore --verbosity diag
C:\Program Files\dotnet\sdk\9.0.200\MSBuild.dll -nologo -distributedlogger:Microsoft.DotNet.Tools.MSBuild.MSBuildLogger,C:\Program Files\dotnet\sdk\9.0.200\dotnet.dll*Microsoft.DotNet.Tools.MSBuild.MSBuildForwardingLogger,C:\Program Files\dotnet\sdk\9.0.200\dotnet.dll -maxcpucount -target:Restore -tlp:default=auto -verbosity:m -verbosity:diag .\nunit.csproj
    Determining projects to restore...
    C:\Program Files\dotnet\sdk\9.0.200\NuGet.targets(175,5): error : The given key '0' was not present in the dictionary.

Restore failed with 1 error(s) in 0.6s

> dotnet --info
.NET SDK:
 Version:           9.0.200
 Commit:            90e8b202f2
 Workload version:  9.0.200
 MSBuild version:   17.13.8+cbc39bea8

Runtime Environment:
 OS Name:     Windows
 OS Version:  10.0.22631
 OS Platform: Windows
 RID:         win-x64
 Base Path:   C:\Program Files\dotnet\sdk\9.0.200\

.NET workloads installed:
 [android]
   Installation Source: SDK 9.0.200
   Manifest Version:    35.0.39/9.0.100
   Manifest Path:       C:\Program Files\dotnet\sdk-manifests\9.0.100\microsoft.net.sdk.android\35.0.39\WorkloadManifest.json
   Install Type:              Msi

 [ios]
   Installation Source: SDK 9.0.200
   Manifest Version:    18.2.9173/9.0.100
   Manifest Path:       C:\Program Files\dotnet\sdk-manifests\9.0.100\microsoft.net.sdk.ios\18.2.9173\WorkloadManifest.json
   Install Type:              Msi

 [maccatalyst]
   Installation Source: SDK 9.0.200
   Manifest Version:    18.2.9173/9.0.100
   Manifest Path:       C:\Program Files\dotnet\sdk-manifests\9.0.100\microsoft.net.sdk.maccatalyst\18.2.9173\WorkloadManifest.json
   Install Type:              Msi

 [maui-tizen]
   Installation Source: SDK 9.0.200
   Manifest Version:    9.0.14/9.0.100
   Manifest Path:       C:\Program Files\dotnet\sdk-manifests\9.0.100\microsoft.net.sdk.maui\9.0.14\WorkloadManifest.json
   Install Type:              Msi

Configured to use workload sets when installing new manifests.

Host:
  Version:      9.0.2
  Architecture: x64
  Commit:       80aa709f5d

.NET SDKs installed:
  6.0.428 [C:\Program Files\dotnet\sdk]
  7.0.203 [C:\Program Files\dotnet\sdk]
  7.0.317 [C:\Program Files\dotnet\sdk]
  7.0.410 [C:\Program Files\dotnet\sdk]
  8.0.113 [C:\Program Files\dotnet\sdk]
  9.0.103 [C:\Program Files\dotnet\sdk]
  9.0.200-preview.0.25057.12 [C:\Program Files\dotnet\sdk]
  9.0.200 [C:\Program Files\dotnet\sdk]

.NET runtimes installed:
  Microsoft.AspNetCore.App 6.0.36 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
  Microsoft.AspNetCore.App 7.0.5 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
  Microsoft.AspNetCore.App 7.0.20 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
  Microsoft.AspNetCore.App 8.0.11 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
  Microsoft.AspNetCore.App 8.0.13 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
  Microsoft.AspNetCore.App 9.0.0 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
  Microsoft.AspNetCore.App 9.0.2 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
  Microsoft.NETCore.App 6.0.36 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
  Microsoft.NETCore.App 7.0.5 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
  Microsoft.NETCore.App 7.0.20 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
  Microsoft.NETCore.App 8.0.11 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
  Microsoft.NETCore.App 8.0.13 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
  Microsoft.NETCore.App 9.0.0 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
  Microsoft.NETCore.App 9.0.2 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
  Microsoft.WindowsDesktop.App 6.0.36 [C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App]
  Microsoft.WindowsDesktop.App 7.0.5 [C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App]
  Microsoft.WindowsDesktop.App 7.0.20 [C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App]
  Microsoft.WindowsDesktop.App 8.0.11 [C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App]
  Microsoft.WindowsDesktop.App 8.0.13 [C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App]
  Microsoft.WindowsDesktop.App 9.0.0 [C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App]
  Microsoft.WindowsDesktop.App 9.0.2 [C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App]

Other architectures found:
  x86   [C:\Program Files (x86)\dotnet]
    registered at [HKLM\SOFTWARE\dotnet\Setup\InstalledVersions\x86\InstallLocation]

Environment variables:
  Not set

global.json file:
  Not found

Learn more:
  https://aka.ms/dotnet/info

Download .NET:
  https://aka.ms/dotnet/download

[jeffkl]

@JanKrivanek I think this is a duplicate of #14052 which has been fixed but not yet released. Can you verify that this command correctly displays an error instead of this unhandled exception?

dotnet restore -p:RestoreUseLegacyDependencyResolver=true

Your project, nunit, is referencing a package named NUnit and you should be getting an error about a cycle. Changing the name of your project will fix the issue.