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Asked: 2026-06-12T01:37:07+00:00

I am working on a web application which interacts with TFS. When I upload

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I am working on a web application which interacts with TFS. When I upload my application to windows azure cloud I am getting this error message .

appreciate your inputs to resolve this issue.

pasted below is the error message I am receiving

Server Error in '/' Application.
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Could not load file or assembly 'Microsoft.TeamFoundation.WorkItemTracking.Client.Cache' or one of its dependencies. An attempt was made to load a program with an incorrect format. 
  Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code. 

 Exception Details: System.BadImageFormatException: Could not load file or assembly 'Microsoft.TeamFoundation.WorkItemTracking.Client.Cache' or one of its dependencies. An attempt was made to load a program with an incorrect format.

Source Error: 


 An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below.  

Assembly Load Trace: The following information can be helpful to determine why the assembly 'Microsoft.TeamFoundation.WorkItemTracking.Client.Cache' could not be loaded.



WRN: Assembly binding logging is turned OFF.
To enable assembly bind failure logging, set the registry value [HKLM\Software\Microsoft\Fusion!EnableLog] (DWORD) to 1.
Note: There is some performance penalty associated with assembly bind failure logging.
To turn this feature off, remove the registry value [HKLM\Software\Microsoft\Fusion!EnableLog].



Stack Trace: 



[BadImageFormatException: Could not load file or assembly 'Microsoft.TeamFoundation.WorkItemTracking.Client.Cache' or one of its dependencies. An attempt was made to load a program with an incorrect format.]
   System.Reflection.RuntimeAssembly._nLoad(AssemblyName fileName, String codeBase, Evidence assemblySecurity, RuntimeAssembly locationHint, StackCrawlMark& stackMark, Boolean throwOnFileNotFound, Boolean forIntrospection, Boolean suppressSecurityChecks) +0
   System.Reflection.RuntimeAssembly.InternalLoadAssemblyName(AssemblyName assemblyRef, Evidence assemblySecurity, StackCrawlMark& stackMark, Boolean forIntrospection, Boolean suppressSecurityChecks) +567
   System.Reflection.RuntimeAssembly.InternalLoad(String assemblyString, Evidence assemblySecurity, StackCrawlMark& stackMark, Boolean forIntrospection) +192
   System.Reflection.Assembly.Load(String assemblyString) +35
   System.Web.Configuration.CompilationSection.LoadAssemblyHelper(String assemblyName, Boolean starDirective) +123

[ConfigurationErrorsException: Could not load file or assembly 'Microsoft.TeamFoundation.WorkItemTracking.Client.Cache' or one of its dependencies. An attempt was made to load a program with an incorrect format.]
   System.Web.Configuration.CompilationSection.LoadAssemblyHelper(String assemblyName, Boolean starDirective) +11568240
   System.Web.Configuration.CompilationSection.LoadAllAssembliesFromAppDomainBinDirectory() +485
   System.Web.Configuration.AssemblyInfo.get_AssemblyInternal() +79
   System.Web.Compilation.BuildManager.GetReferencedAssemblies(CompilationSection compConfig) +337
   System.Web.Compilation.BuildManager.CallPreStartInitMethods() +280
   System.Web.Hosting.HostingEnvironment.Initialize(ApplicationManager appManager, IApplicationHost appHost, IConfigMapPathFactory configMapPathFactory, HostingEnvironmentParameters hostingParameters, PolicyLevel policyLevel, Exception appDomainCreationException) +1167

[HttpException (0x80004005): Could not load file or assembly 'Microsoft.TeamFoundation.WorkItemTracking.Client.Cache' or one of its dependencies. An attempt was made to load a program with an incorrect format.]
   System.Web.HttpRuntime.FirstRequestInit(HttpContext context) +11700976
   System.Web.HttpRuntime.EnsureFirstRequestInit(HttpContext context) +141
   System.Web.HttpRuntime.ProcessRequestNotificationPrivate(IIS7WorkerRequest wr, HttpContext context) +4869205




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Version Information: Microsoft .NET Framework Version:4.0.30319; ASP.NET Version:4.0.30319.272
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1 Answer

  1. Editorial Team

    This is because ,your project is trying to use a 32-bit dll in a 64-bit environment(azure)

    To solve this type of issues ,create a start up script with the below given commands

    Copy below startup script to a text file and save as “setup.cmd” .
    Then include this file into your web role project,set “copy local”=true
    then open your ServiceDefinition.csdef below given startup command inside webrole tag 

    <webrole > --your webrole
    <Startup>
              <Task commandLine="setup.cmd" executionContext="elevated" />
          </Startup>
</webrole >

    start up script pasted below:

    %windir%\system32\inetsrv\appcmd set config -section:system.applicationHost/applicationPools /applicationPoolDefaults.enable32BitAppOnWin64:"True" /commit:apphost
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