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500 Internal Server Error - SharePoint 2013 RRS feed

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    I'm facing "500 internal server error" issue frequently with all my SharePoint sites. I have configured tracing on IIS and getting below as a warning. The application pool recycles issue immediately but it occurs again. 

    IIS Trace - 

    ModuleName SPWindowsClaimsAuthentication
    Notification 2
    HttpStatus 500
    HttpReason Internal Server Error
    HttpSubStatus 0
    ErrorCode 0
    ConfigExceptionInfo
    Notification AUTHENTICATE_REQUEST
    ErrorCode The operation completed successfully. (0x0)

    EventViewer - An exception occurred when trying to establish endpoint for context: Could not load file or assembly 'Microsoft.IdentityModel.Extensions, Version=2.0.0.0, Culture=neutral, PublicKeyToken=69c3241e6f0468ca' or one of its dependencies. Provider type not defined. (Exception from HRESULT: 0x80090017).

    Please help..


    Monday, November 16, 2015 7:52 PM

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