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Editorial Team
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Asked: 2026-06-03T08:11:58+00:00

I’m following this tutorial http://blogs.msdn.com/b/astoriateam/archive/2010/07/21/odata-and-authentication-part-6-custom-basic-authentication.aspx . I need to add to the web.config :

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I’m following this tutorial http://blogs.msdn.com/b/astoriateam/archive/2010/07/21/odata-and-authentication-part-6-custom-basic-authentication.aspx.
I need to add to the web.config :

<system.webServer> 
  <modules> 
    <add name="BasicAuthenticationModule" 
         type="SimpleService.BasicAuthenticationModule"/> 
  </modules> 
</system.webServer>

But I get Cannot add duplicate collection entry of type ‘add’ with unique key attribute ‘name’ set to ‘BasicAuthenticationModule’
So, I search the net for some solution, many posts suggest adding this line

<system.webServer> 
      <modules> 
        <remove name="BasicAuthenticationModule"/>
        <add name="BasicAuthenticationModule" 
             type="SimpleService.BasicAuthenticationModule"/> 
      </modules> 
    </system.webServer>

but now I get a “Lock Violation”

any help please??

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1 Answer

  1. Editorial Team

    Well, It’s kind of disappeared and everything works great now.
    At first I had to disable all Authentication for the Application in the IIS, but I had to do a system restore, after that it’s all history.
    Sorry I can’t help .

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