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Editorial Team
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Asked: 2026-06-07T04:07:46+00:00

I have a (.NET 4) test project which references (the .NET 4) NSubstitute.dll. When

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I have a (.NET 4) test project which references (the .NET 4) NSubstitute.dll.

When I run CodeAnalysis against the project I get a number of CA0001 errors:

Running Code Analysis…

MSBUILD : error : CA0001 : The following error was encountered while reading module ‘NSubstitute’: Could not resolve type reference: [mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089]System.Runtime.CompilerServices.ExtensionAttribute.

MSBUILD : error : CA0001 : Rule=Microsoft.Interoperability#CA1404, Target=arcplan.test.engage.admin.ecmFramework.CAppSettingsTest.#IsSettingsStoreReadyToUse_SettingsStoreIsNotReady_ReturnsFalse() : The following error was encountered while reading module ‘ECMFrameworkTest’: Method type parameter in position 0 is not valid.

MSBUILD : error : CA0001 : Rule=Microsoft.Security#CA2122, Target=arcplan.test.engage.admin.ecmFramework.CAppSettingsTest.#IsSettingsStoreReadyToUse_SettingsStoreIsNotReady_ReturnsFalse() : The following error was encountered while reading module ‘ECMFrameworkTest’: Method type parameter in position 0 is not valid.

(etc.)

Does anyone know how to solve this?

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1 Answer

  1. Editorial Team

    Are you using version 1.4.1? The build of this version had a problem caused by using ilmerge with .NET 4.5 installed. This is fixed as of version 1.4.2 of NSubstitute (the latest release as of this comment).

    More details are available on the commit to fix this.

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