Due to the Russian invasion of Ukraine, we have paused all purchases and training from Russia.  Read Statement from Scrum.org

TFS Error: MSB4018 The “BuildShadowTask” task failed unexpectedly

Topic(s)
Audience

No items found

Table of Contents

There seams to be a problem in MSBuild when you add an “Accessor” as part of a Unit Test project.

C:Program FilesMSBuildMicrosoftVisualStudiov9.0TeamTestMicrosoft.TeamTest.targets(14,5): error MSB4018: The "BuildShadowTask" task failed unexpectedly.
System.IO.FileLoadException: API restriction: The assembly 'file:///C:WINDOWSMicrosoft.NETFrameworkv2.0.50727System.Web.dll' has already loaded from a different location. It cannot be loaded from a new location within the same appdomain.
   at System.Reflection.Assembly._nLoad(AssemblyName fileName, String codeBase, Evidence assemblySecurity, Assembly locationHint, StackCrawlMark& stackMark, Boolean throwOnFileNotFound, Boolean forIntrospection)
   at System.Reflection.Assembly.nLoad(AssemblyName fileName, String codeBase, Evidence assemblySecurity, Assembly locationHint, StackCrawlMark& stackMark, Boolean throwOnFileNotFound, Boolean forIntrospection)
   at System.Reflection.Assembly.InternalLoad(AssemblyName assemblyRef, Evidence assemblySecurity, StackCrawlMark& stackMark, Boolean forIntrospection)
   at System.Reflection.Assembly.InternalLoadFrom(String assemblyFile, Evidence securityEvidence, Byte[] hashValue, AssemblyHashAlgorithm hashAlgorithm, Boolean forIntrospection, StackCrawlMark& stackMark)
   at System.Reflection.Assembly.ReflectionOnlyLoadFrom(String assemblyFile)
   at Microsoft.VisualStudio.TestTools.UnitTesting.Publicize.WebBinder.LoadData()
   at Microsoft.VisualStudio.TestTools.UnitTesting.Publicize.WebBinder.Init()
   at Microsoft.VisualStudio.TestTools.UnitTesting.Publicize.Shadower..ctor()
   at Microsoft.VisualStudio.TestTools.BuildShadowReferences.BuildShadowTask.Execute()
   at Microsoft.Build.BuildEngine.TaskEngine.ExecuteInstantiatedTask(EngineProxy engineProxy, ItemBucket bucket, TaskExecutionMode howToExecuteTask, ITask task, Boolean& taskResult)

 

An Accessor allows your test project to access code that would normally be “Private” or “Friend” from outside the Assembly that it resides in.

image

It creates a little file with the “.accessor” extension that is the same name as your DLL, and contains the name of the DLL.

image

If you remove this file then your remote MSBuild server will then build you solution successfully again including running your Unit Tests.

 

Reference:

Re: BuildShadowTask Failed unexpectedly – Accessor Problem (Upconvert VS 2005 to 2008) – URGENT

BuildShadowTask Failed unexpectedly – Accessor Problem (Upconvert VS 2005 to 2008) – URGENT

 

Technorati Tags:     

Create a conversation around this article

Share on Facebook
Share on Twitter
Share on Linkdin

Want to learn more?

Check out the many training classes that we have.

No items found

Want to read more?

OUR TEAM

We believe that every company deserves high quality software delivered on a regular cadence that meets its customers needs. Our goal is to help you reduce your cycle time, improve your time to market, and minimise any organisational friction in achieving your goals.

naked Agility Limited is a professional company that offers training, coaching, mentoring, and facilitation to help people and teams evolve, integrate, and continuously improve.

We recognise the positive impact that a happy AND motivated workforce, that has purpose, has on client experience. We help change mindsets towards a people-first culture where everyone encourages others to learn and grow. The resulting divergent thinking leads to many different ideas and opportunities for the success of the organisation.