Could not load file or assembly Exception from HRESULT 0x80131040

Question

I created my first MVC 4 project and it works perfectly on local server  But when I publish it on to local folder and upload the folder contents to hosting server  I try to run it and I get this error      Could not load file or assembly  DotNetOpenAuth Core  Version 4 0 0 0  Culture neutral  PublicKeyToken 2780ccd10d57b246  or one of its dependencies  The system cannot find the file specified    Can any one help me please    Web config    lt assemblyBinding xmlns  urn schemas-microsoft-com asm v1  gt     lt dependentAssembly gt       lt assemblyIdentity name  DotNetOpenAuth Core  publicKeyToken  2780ccd10d57b246    gt       lt bindingRedirect oldVersion  1 0 0 0-4 0 0 0  newVersion  4 1 0 0    gt     lt  dependentAssembly gt     lt dependentAssembly gt       lt assemblyIdentity name  DotNetOpenAuth AspNet  publicKeyToken  2780ccd10d57b246    gt       lt bindingRedirect oldVersion  1 0 0 0-4 0 0 0  newVersion  4 1 0 0    gt     lt  dependentAssembly gt     lt dependentAssembly gt       lt assemblyIdentity name  System Web Helpers  publicKeyToken  31bf3856ad364e35    gt       lt bindingRedirect oldVersion  1 0 0 0-2 0 0 0  newVersion  2 0 0 0    gt     lt  dependentAssembly gt     lt dependentAssembly gt       lt assemblyIdentity name  System Web Mvc  publicKeyToken  31bf3856ad364e35    gt       lt bindingRedirect oldVersion  1 0 0 0-4 0 0 0  newVersion  4 0 0 0    gt     lt  dependentAssembly gt     lt dependentAssembly gt       lt assemblyIdentity name  System Web WebPages  publicKeyToken  31bf3856ad364e35    gt       lt bindingRedirect oldVersion  1 0 0 0-2 0 0 0  newVersion  2 0 0 0    gt     lt  dependentAssembly gt     lt dependentAssembly gt       lt assemblyIdentity name  WebGrease  publicKeyToken  31bf3856ad364e35    gt       lt bindingRedirect oldVersion  1 0 0 0-1 3 0 0  newVersion  1 3 0 0    gt     lt  dependentAssembly gt   lt  assemblyBinding gt    P S The same project in Web Forms works on hosting server

User · Answer

Check if the project having HRESULT  0x80131040 error is being used referenced by any project  If yes  kindly check if these project have similar  dll being referenced and the version is the same  If they re are not of same version number  then it is causing the said error

User · Answer

Add following dll files to bin folder   DotNetOpenAuth AspNet dll DotNetOpenAuth Core dll DotNetOpenAuth OAuth Consumer dll DotNetOpenAuth OAuth dll DotNetOpenAuth OpenId dll DotNetOpenAuth OpenId RelyingParty dll   If you will not need them  delete dependentAssemblies from config named  DotNetOpenAuth Core  etc

User · Answer

What worked for me immediately was    I located bin folder  picture below shows   moved all dll in other folder for safety  then rebuild ed the project    after solved the issue  deleted old dll files

User · Answer

Finally found the answer   Go to References --  right cilck on dll file that causing the problem --  select the properties --  check the version --  match the version in properties to web config    lt dependentAssembly gt       lt assemblyIdentity name  YourDllFile  publicKeyToken  2780ccd10d57b246                culture  neutral    gt       lt bindingRedirect oldVersion  0 0 0 0-YourDllFileVersion  newVersion  YourDllFileVersion    gt     lt  dependentAssembly gt

User · Answer

I have issue with itextsharp and itextsharp xmlworker dlls for exception-from-hresult-0x80131040 so I have removed those both dlls from references and downloaded new dlls directly from nuget packages  which resolved my issue  May be this method can be useful to resolved the issue to other people

User · Answer

Try this    Edit the   pubxml file in the PublishProfiles folder set  DeleteExistingFiles true update all nugget packages  rebuild  republish and voila  issue resolved       worked for me when I had the same problem

User · Answer

If your solution contains two projects interacting with each other and both using one same reference  And if version of respective reference is different in both projects  Then also such errors occurred  Keep updating all references to latest one

[asp.net] Could not load file or assembly Exception from HRESULT: 0x80131040

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