12210 An Internet Server API (ISAPI) filter has finished handling the request, InfoPath Forms Services RRS feed

  • Question

  • Background: 
      Forefront TMG 2010 on Server 2008 R2
      SharePoint 2010 on Server 2008 R2 (different box)

    Client had a working setup on ISA 2006 box but they called me one morning after they found it laying dead in the rack.  Tried to find the backups but they appear to have left with the last guy who worked for them.

    I built up a new box with TMG 2010 and got it dialed in to their SharePoint.  All (navigation, button clicks, etc.) work as expected.  However, they have several forms that they use: one customized list form and one straight-up browser based form (no code).  From inside the network the forms operate exactly as expected.  Once someone opens the form from an external network the TMG logs:
    "12210 An Internet Server API (ISAPI) filter has finished handling the request, InfoPath Forms Services"

    Wireshark shows: HTTP/1.1 401 Unauthorized , NTLMSSP_CHALLENGE

    I get the same "HTTP/1.1 302 Moved Temporarily" in TMG logging as noted in this post.

    Anyone have any ideas?  The post I linked to did not suggest a specific fix.



    Thursday, November 1, 2012 10:25 PM


All replies

  • Deleted
    Thursday, November 1, 2012 10:50 PM
  • Thanks for the really quick response and the suggestion.  I checked the publishing rule and found that Verify Normalization and Block High Bit Characters were both disabled.

    Any other ideas?

    Friday, November 2, 2012 4:02 PM
  • And just for clarification:
      From an external network these forms can be opened without error.  It is only when data is sent back to the server (postback, submit) that the 12210 error occurs.
    Friday, November 2, 2012 4:22 PM
  • Update:

    I had seen this blog entry and thought that I had followed the steps correctly.  I double checked but had apparently reversed "replace this" and "with this".  So, all is happy again.  Forms now work correctly from the external network.

    Friday, November 2, 2012 6:49 PM