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AnswerHTTP Status 417: Expectation Failed

  • Monday, March 06, 2006 2:15 PMDelboy6969 Users MedalsUsers MedalsUsers MedalsUsers MedalsUsers Medals
     
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    Hi,

    Hope someone knows the solution to this problem as it's driving me insane !

    I have Visual Studio Pro 2005 installed.  I do NOT have the local MSDN installed.   I want to use online version only.

    Whenver I go to the help I get "Information not found".   Document explorer is configured to use "Online first, then local".

    If I hit the search button and enter a search string I get the error message below:
    Search Failed.
    The request failed with HTTP Status 417: Expectation failed.

    If I try to 'download provider list' in the help options I get error message :
    Unable to retrieve resources from the MSDN service.

    The start page loads the MSDN without problem - as does my web browser.

    I have proxy configuration script - have tried some suggestions on here for that but they don't seem to be related to this error message.

    Any ideas anyone ??
     

Answers

  • Monday, March 20, 2006 9:12 PMSaurabh Jain VSMSFT, ModeratorUsers MedalsUsers MedalsUsers MedalsUsers MedalsUsers Medals
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    Hi,

    It seems that this error can also occur on some proxies that don't support "100 continue" expectation. The workaround is to add the following to the dexplore.exe.config file.

    <configuration>

    <system.net>

    <settings>

                <servicePointManager expect100Continue="false" />

    </settings>

    </system.net>

    </configuration>

     

    --

    Regards,

    Saurabh

     

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  • Friday, March 10, 2006 9:43 AMjhin Users MedalsUsers MedalsUsers MedalsUsers MedalsUsers Medals
     
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    I am experiencing the same problem. If you find a solution, please let me know.
     
  • Wednesday, March 15, 2006 1:52 AMSaurabh Jain VSMSFT, ModeratorUsers MedalsUsers MedalsUsers MedalsUsers MedalsUsers Medals
     
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    Can you describe your proxy environment, i.e. whether it is ISA or Squid or something else? Also, does it require authentication when browsing in IE?

    --
    Regards,
    Saurabh

     
  • Thursday, March 16, 2006 8:56 PMSaurabh Jain VSMSFT, ModeratorUsers MedalsUsers MedalsUsers MedalsUsers MedalsUsers Medals
     
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    Researching on the internet, it seems that some ad-blocking/SOAP blocking proxies result in the HTTP 417 errors. Following is an example of it.

    http://support.sourcegear.com/viewtopic.php?p=373#373

    Is it possible that proxies you are using are using one of blocking mechanisms? Help Search using Web Service calls and will fail if SOAP message is blocked.

    --
    Regards,
    Saurabh

     

     
  • Monday, March 20, 2006 9:12 PMSaurabh Jain VSMSFT, ModeratorUsers MedalsUsers MedalsUsers MedalsUsers MedalsUsers Medals
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    Hi,

    It seems that this error can also occur on some proxies that don't support "100 continue" expectation. The workaround is to add the following to the dexplore.exe.config file.

    <configuration>

    <system.net>

    <settings>

                <servicePointManager expect100Continue="false" />

    </settings>

    </system.net>

    </configuration>

     

    --

    Regards,

    Saurabh

     
  • Tuesday, March 21, 2006 8:22 AMDelboy6969 Users MedalsUsers MedalsUsers MedalsUsers MedalsUsers Medals
     
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    That works perfectly!   Many thaks again Saurabh.
     
  • Tuesday, October 02, 2007 2:51 PMCarlo Rivolta Users MedalsUsers MedalsUsers MedalsUsers MedalsUsers Medals
     
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    Now my MSDN C# 2005 Explorer is faster.

    But I cannot download the provider list. A messagebox displays : "Error getting Codezone Community sites. Configuration Sytsem Failed to inizialize."

     

    Help me