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System.InvalidOperationException: Could not find 'UserSecretsIdAttribute' on assembly 'System.Private.CoreLib' #2441

aggieben opened this issue Oct 2, 2019 · 4 comments


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commented Oct 2, 2019

Describe the bug

This bug seems to me to be very similar to aspnet/AspNetCore#7649. I'm using F# with Giraffe to fiddle around with a simple api project, but when I start it, I get the exception shown in the title. Here's the full backtrace:

23:55 $ dotnet run
Unhandled exception. System.InvalidOperationException: Could not find 'UserSecretsIdAttribute' on assembly 'System.Private.CoreLib'.
Check that the project for 'System.Private.CoreLib' has set the 'UserSecretsId' build property.
If the 'UserSecretsId' property is already set then add a reference to the Microsoft.Extensions.Configuration.UserSecrets package.
   at Microsoft.Extensions.Configuration.UserSecretsConfigurationExtensions.AddUserSecrets(IConfigurationBuilder configuration, Assembly assembly, Boolean optional, Boolean reloadOnChange)
   at Microsoft.Extensions.Configuration.UserSecretsConfigurationExtensions.AddUserSecrets[T](IConfigurationBuilder configuration)
   at GinghamStreet.Shopify.IntegrationApi.App.configureServices(IServiceCollection services) in /Users/ben/proj/c9/gssext/src/GinghamStreet.Shopify.IntegrationApi/Program.fs:line 116
   at GinghamStreet.Shopify.IntegrationApi.App.main@141-1.Invoke(IServiceCollection delegateArg0) in /Users/ben/proj/c9/gssext/src/GinghamStreet.Shopify.IntegrationApi/Program.fs:line 141
   at Microsoft.AspNetCore.Hosting.WebHostBuilder.<>c__DisplayClass10_0.<ConfigureServices>b__0(WebHostBuilderContext _, IServiceCollection services)
   at Microsoft.AspNetCore.Hosting.WebHostBuilder.BuildCommonServices(AggregateException& hostingStartupErrors)
   at Microsoft.AspNetCore.Hosting.WebHostBuilder.Build()
   at GinghamStreet.Shopify.IntegrationApi.App.main(String[] _arg1) in /Users/ben/proj/c9/gssext/src/GinghamStreet.Shopify.IntegrationApi/Program.fs:line 134

At first I just used the dotnet tooling to set up user secrets:
dotnet user-secrets init, which added the UserSecretsIdAttribute property to my .fsproj file; followed by a couple of dotnet user-secrets set "key:value" commands. When the above error was thrown when I tried to run at this point, I tried disabling AssemblyInfo generation with GenerateUserSecretsAttribute set to false and then writing my own AssemblyInfo.fs, but that didn't change anything.

To Reproduce

Steps to reproduce the behavior:

  1. Using this version of ASP.NET Core: 3.0.0 with SDK 3.0.100 on macOS.
  2. Run this code: see attached zip
  3. See error

Expected behavior

I expected to just run the dotnet user-secrets tools and have things work.

Additional context

01:23 $ dotnet --info
.NET Core SDK (reflecting any global.json):
 Version:   3.0.100
 Commit:    04339c3a26

Runtime Environment:
 OS Name:     Mac OS X
 OS Version:  10.14
 OS Platform: Darwin
 RID:         osx.10.14-x64
 Base Path:   /usr/local/share/dotnet/sdk/3.0.100/

Host (useful for support):
  Version: 3.0.0
  Commit:  7d57652f33

.NET Core SDKs installed:
  2.2.300 [/usr/local/share/dotnet/sdk]
  3.0.100 [/usr/local/share/dotnet/sdk]

.NET Core runtimes installed:
  Microsoft.AspNetCore.All 2.1.6 [/usr/local/share/dotnet/shared/Microsoft.AspNetCore.All]
  Microsoft.AspNetCore.All 2.1.7 [/usr/local/share/dotnet/shared/Microsoft.AspNetCore.All]
  Microsoft.AspNetCore.All 2.1.8 [/usr/local/share/dotnet/shared/Microsoft.AspNetCore.All]
  Microsoft.AspNetCore.All 2.1.9 [/usr/local/share/dotnet/shared/Microsoft.AspNetCore.All]
  Microsoft.AspNetCore.All 2.2.5 [/usr/local/share/dotnet/shared/Microsoft.AspNetCore.All]
  Microsoft.AspNetCore.App 2.1.6 [/usr/local/share/dotnet/shared/Microsoft.AspNetCore.App]
  Microsoft.AspNetCore.App 2.1.7 [/usr/local/share/dotnet/shared/Microsoft.AspNetCore.App]
  Microsoft.AspNetCore.App 2.1.8 [/usr/local/share/dotnet/shared/Microsoft.AspNetCore.App]
  Microsoft.AspNetCore.App 2.1.9 [/usr/local/share/dotnet/shared/Microsoft.AspNetCore.App]
  Microsoft.AspNetCore.App 2.2.5 [/usr/local/share/dotnet/shared/Microsoft.AspNetCore.App]
  Microsoft.AspNetCore.App 3.0.0-preview4-19216-03 [/usr/local/share/dotnet/shared/Microsoft.AspNetCore.App]
  Microsoft.AspNetCore.App 3.0.0-preview5-19227-01 [/usr/local/share/dotnet/shared/Microsoft.AspNetCore.App]
  Microsoft.AspNetCore.App 3.0.0 [/usr/local/share/dotnet/shared/Microsoft.AspNetCore.App]
  Microsoft.NETCore.App 2.1.6 [/usr/local/share/dotnet/shared/Microsoft.NETCore.App]
  Microsoft.NETCore.App 2.1.7 [/usr/local/share/dotnet/shared/Microsoft.NETCore.App]
  Microsoft.NETCore.App 2.1.8 [/usr/local/share/dotnet/shared/Microsoft.NETCore.App]
  Microsoft.NETCore.App 2.1.9 [/usr/local/share/dotnet/shared/Microsoft.NETCore.App]
  Microsoft.NETCore.App 2.2.5 [/usr/local/share/dotnet/shared/Microsoft.NETCore.App]
  Microsoft.NETCore.App 3.0.0-preview4-27615-11 [/usr/local/share/dotnet/shared/Microsoft.NETCore.App]
  Microsoft.NETCore.App 3.0.0-preview5-27626-15 [/usr/local/share/dotnet/shared/Microsoft.NETCore.App]
  Microsoft.NETCore.App 3.0.0 [/usr/local/share/dotnet/shared/Microsoft.NETCore.App]

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commented Oct 2, 2019

Starting with hosting like the linked bug.


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commented Oct 2, 2019

Also tagging @cartermp in case of something F# specific.

@Tratcher Tratcher transferred this issue from aspnet/AspNetCore Oct 2, 2019
@Tratcher Tratcher added the area-config label Oct 2, 2019

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commented Oct 3, 2019

Another data point: removing the property from the .fsproj and removing my manual AssemblyInfo.fs also didn't fix the problem. It wasn't until I removed the line where I called IServiceCollection.AddUserSecrets() that the exception cleared up.


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commented Oct 15, 2019

Another: this problem happens on Windows also, not just macOS.

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