NetworkError: 500 Internal Server Error RRS feed

  • Question

  • User1628746328 posted


    We've recently deployed an application to a Windows 2012 R2 Server running IIS8 production box that isn't rendering css or image files up to the browser.

    It renders fine in development and validation, however when we put it into production we get an error (Firebug and Fiddler) of:

    NetworkError: 500 Internal Server Error - http://website/app/masterpage.css

    The IIS log entry looks like this:

    2015-08-13 18:55:05 GET /app/masterpage.css - 80 - Mozilla/5.0+(Windows+NT+6.1;+WOW64;+rv:33.0)+Gecko/20100101+Firefox/33.0 http://website/app/Default.aspx 500 19 183 0

    I've been searching the web to try and find similar issues and it seems that in order to drill down into this error, I might need to find an HRESULT code, however I cannot determine where this code would be found.

    We've looked in the Windows EventViewer, however do not see any 500 Errors there for IIS and cannot see any HRESULT codes in Fiddler or Firebug.

    I guess the other option would be to turn on FailedRequestTracing in IIS 8

    Thanks for any guidance on this issue.

    Monday, August 17, 2015 12:41 PM


All replies

  • User281315223 posted

    I would find it hard to believe that a CSS file would cause an error like this to occur, which leads me to think that there is something going on outside of that (within the application itself). Do you have any other error logs available? Or have you tried configuring the customErrors within your web.config to possible serve the full error messages on your deployed site?

    Monday, August 17, 2015 6:51 PM
  • User1628746328 posted

    We received a response from SO which solved our problem.


    Thanks for your help.

    • Marked as answer by Anonymous Thursday, October 7, 2021 12:00 AM
    Tuesday, August 18, 2015 9:25 AM