System.Net.WebException the request failed with HTTP status 401: Unauthorized.” Source=”System.Web.Services”

10 thoughts on “System.Net.WebException the request failed with HTTP status 401: Unauthorized.” Source=”System.Web.Services””

1. Yipeeee…It works. It works better than asp.net forums.

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2. Is the code placed in the web.config of the calling application or the web.config of the webservice?

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3. Web.config of the calling application!!!

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4. Still same error. Grrr…

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5. me two….grrrr….i have been struggling w/this same error. anyone configure with IFD?

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6. this web page have failed to open code 417 or 401 how do i fix this

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7. hi nishant,

   truely very useful post.

   one more thing i want add here is when we reference webservice to any application we have to set
   Webservice.PreAuthenticate = true;
   Webservice.Credentials = System.Net.CredentialCache.DefaultCredentials;
   to code. other wise it will throw an access denied erro.

   thanks

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   1. Thanks al lot. This post did the trick for me.

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8. Hi

   Please use your credentials instead of using default credentials.

   In my case it works fine.

   Thanks

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   1. Thanks for sharing the information.
      If you are valid CRM user it will work for you credential. For other users also it would use your credentials.

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