Service Reference Error Failed to generate code for the service reference

Question

I have a Windows Service Solution and am trying to add a service reference to a Hermes Opensource ebms message server  Web Service in VS2010   I can find the Web Service using it s URL  but when I try and populate the Service reference I get the following errors in Visual Studio   Error 8 Custom tool error  Failed to generate code for the service reference  testService    Please check other error and warning messages for details  C  Users Admin documents visual studio 2010 Projects MyProject MyProject MessageHandler Service References testService Reference svcmap 1 1 MyProject MessageHandler   Warning 6 Custom tool warning  Cannot import wsdl binding Detail  There was an error importing a wsdl portType that the wsdl binding is dependent on  XPath to wsdl portType    wsdl definitions  targetNamespace  http   service ebms edi cecid hku hk    wsdl portType  name  EbmsStatusQuery   XPath to Error Source    wsdl definitions  targetNamespace  http   service ebms edi cecid hku hk    wsdl binding  name  EbmsSoapHttpStatusQuery   C  Users Admin documents visual studio 2010 Projects MyProject MyProject MessageHandler Service References testService Reference svcmap 1 1 MyProject MessageHandler  Warning 7 Custom tool warning  Cannot import wsdl port Detail  There was an error importing a wsdl binding that the wsdl port is dependent on  XPath to wsdl binding    wsdl definitions  targetNamespace  http   service ebms edi cecid hku hk    wsdl binding  name  EbmsSoapHttpStatusQuery   XPath to Error Source    wsdl definitions  targetNamespace  http   service ebms edi cecid hku hk    wsdl service  name  EbmsMessageStatusQuery   wsdl port  name  EbmsStatusQuery   C  Users Admin documents visual studio 2010 Projects MyProject MyProject MessageHandler Service References testService Reference svcmap 1 1 MyProject MessageHandler  Warning 5 Custom tool warning  Cannot import wsdl portType Detail  An exception was thrown while running a WSDL import extension  System ServiceModel Description XmlSerializerMessageContractImporter Error  Schema with target namespace  http   service ebms edi cecid hku hk   could not be found  XPath to Error Source    wsdl definitions  targetNamespace  http   service ebms edi cecid hku hk    wsdl portType  name  EbmsStatusQuery   C  Users Admin documents visual studio 2010 Projects MyProject MyProject MessageHandler Service References testService Reference svcmap 1 1 MyProject MessageHandler   Some investigation seemed to suggest it is due to svcutil exe not been able to build the proxys due to not having permissions to a directory  possibly c  windows temp    I have tried assigning various access permissions  but I am not really sure which user needs the permission  or if it is just a red herring   Any ideas would be greatly appreciated   Thanks

User · Answer

I also encountered a similar error when trying to generate the client for a web service from an ASP .Net MVC 4.0 project using Visual Studio 2012.

The root of the problem seems to be that fact that the project from where I was trying to generate the client was referencing an assembly which in turn was dependent on another assembly that was not being referenced as well.

When "Reuse types in referenced assemblies" is enabled in the service configuration, the service generator is probably inspecting all the referenced assemblies to get a list of types that can be reused. The fact that one of the referenced assemblies is referencing another assembly which is not available is probably causing the generator to fail.

Unchecking "Reuse types in referenced assemblies" from the service configurations will solve the above problem, but there is a side effect to it. The reuse types option is there for a reason and in some cases it avoids unnecessary casting in the code consuming the service.

For example, if the service itself is built using WCF and some methods parameters inside it are of type System.Guid, they will be translated to strings in the generated client if the reuse types option is disabled.

An alternative that I prefer to disabling reusing types is to add the service reference from Class Library project specifically created for that purpose. The one thing to keep in mind is to copy all the service related configurations from the class library's app.config to the configuration file of the startup project.

If there are types defined in local assemblies that need to be reused in the service client, those assemblies simply need to be referenced from the above mentioned class library project, along with all their dependencies.

User · Answer

face same issue  resolved by running Visual Studio in Admin mode

User · Answer

http   uliasz com 2011 06 wcf-custom-tool-error-failed-to-generate-code-for-the-service-reference  comment-1647  Thanks to the article above    In my case  i have this issue with my WPF project in VS Net 2008  After going through this article  i was realizing that the assembly used in the web service is different version of assembly used on client   It works just fine after updating the assembly on the client

User · Answer

I had this problem when trying to update my service reference  The error only shows up when adding a service reference though  but didn t want to remove the assembly reuse checkbox  What worked for me was the following   Remove referenced assembly that I wanted to re-use Update service reference Keep  quot Reuse types in specified referenced assemblies quot  Ignore the errors  it s because the reference is missing  Add reference to assembly again to fix the errors Update service reference again  Voila  now it actually updates and doesn t try to remove all of my generated code anymore  I was almost ready to give up on the re-use types feature    EDIT  Also make sure that the build config is AnyCPU or x86  since svcutil is buggy with x64  To the downvoter  Sorry if it didn t work for you  I don t even know why it worked for me  but it did  I may have done something else that time that fixed the problem  but no way to know now

User · Answer

Right click on your service reference and choose Configure Service Reference       Then uncheck Reuse types in referenced assemblies    Click OK  clean and rebuild your solution

User · Answer

It would be extremely difficult to guess the problem since it is due to a an error in the WSDL and without examining the WSDL  I cannot comment much more  So if you can share your WSDL  please do so   All I can say is that there seems to be a missing schema in the WSDL  with the target namespace  http   service ebms edi cecid hku hk     I know about issues and different handling of the schema when include instructions are ignored   Generally I have found Microsoft s implementation of web services pretty good so I think the web service is sending back dodgy WSDL

User · Answer

Reuse types  is not always the problem when this error occurs    When adding a reference to an older service  click  advanced  and there  Add Web Reference   Now link to your wsdl and everything should be working

User · Answer

If you want to correct this without uncheking the assembly reuse checkbox this is what worked for me    Remove referenced assembly that you want to re-use Delete all the bin folder of the project Update service reference    Keep  Reuse types in specified referenced assemblies   Add reference to assembly again to fix the errors Update service reference again

User · Answer

Have to uncheck the Reuse types in all referenced assemblies from Configure service reference option  Check this for details

User · Answer

As stated above  there are a couple of different problems possible   What we found is that the  DLL for the WCF library had been added as a reference to the client project   This  in turn  created problems with resolving the objects and thus caused the files to be  emptied  by code generation steps   While unchecking the use  Reuse Types     can seem like an answer  it creates extra definitions of object types  which are proxies to the real types  in a new name space  which then causes all kinds of  compatibility  issues with the use of those types   Only if you really want to  hide  a type should you check this option   Hiding the type would be appropriate when you don t want a  DLL  type dependency to  leak  into a project that you are trying to keep segregated from another    If the DLL for the WCF library project creeps into the client project references  then you will have this problem with all kinds of strange side effects since the type definitions are also in the DLL

User · Answer

I get the same error in Silverlight 5  VS2012   You can also remove the references to    System ServiceModel DomainServices Client System ServiceModel DomainServices Client Web   After you ve updated the service references  be sure to add them back in

User · Answer

I have encountered this problem when upgrading a VS2010 WCF Silverlight solution in VS2015 Professional  Besides automatically upgrading from Silverlight 4 to Silverlight 5  the service reference reuse checkbox value was changed and generation failed

User · Answer

Restarting Visual Studio did the trick for me  I am using VS 2015

[c#] Service Reference Error: Failed to generate code for the service reference

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