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AnswerIAS Authentication Error

  • Tuesday, August 07, 2007 8:58 AMkevinhobson2000 Users MedalsUsers MedalsUsers MedalsUsers MedalsUsers Medals
     
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    Hi Everyone,

     

    The other day all wireless clients stopped being able to authenticate with the IAS server.

     

    The message in the event logger is:

     

    User CWLNT\cumminr was denied access.

    Fully-Qualified-User-Name = charleswells.co.uk/.Wells & Youngs/Users/cumminr

    NAS-IP-Address = 10.200.100.2

    NAS-Identifier = WLC1

    Called-Station-Identifier = 00-0B-85-71-B0-00:Charles Wells WLAN

    Calling-Station-Identifier = 00-13-CE-37-6F-E6

    Client-Friendly-Name = Brewery Cisco Wireless LAN Controller

    Client-IP-Address = 10.200.100.2

    NAS-Port-Type = Wireless - IEEE 802.11

    NAS-Port = 1

    Proxy-Policy-Name = Use Windows authentication for all users

    Authentication-Provider = Windows

    Authentication-Server = <undetermined>

    Policy-Name = Wireless Domain Users

    Authentication-Type = PEAP

    EAP-Type = <undetermined>

    Reason-Code = 262

    Reason = The supplied message is incomplete. The signature was not verified.

    For more information, see Help and Support Center at

     

    The cerficates are auto enrolled using Group Policy.

     

    Have tried a manual enrollment of a client certifcate to no avail.

     

    Any help would be appreciated.

     

    Regards

     

    Kev

     

Answers

  • Saturday, August 11, 2007 10:31 AMBrjann BrekkanMSFTUsers MedalsUsers MedalsUsers MedalsUsers MedalsUsers Medals
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    Could you supply us with some more info on the setup such as your version of Windows Server 2008? has this worked without problems and then all in a sudden just stopped working for all your users?

     

    You could start by checking validity of your Certificates, both server and clients, making sure nothing has expired.

     

    Brjann

     

All Replies

  • Saturday, August 11, 2007 10:31 AMBrjann BrekkanMSFTUsers MedalsUsers MedalsUsers MedalsUsers MedalsUsers Medals
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    Could you supply us with some more info on the setup such as your version of Windows Server 2008? has this worked without problems and then all in a sudden just stopped working for all your users?

     

    You could start by checking validity of your Certificates, both server and clients, making sure nothing has expired.

     

    Brjann

     
  • Tuesday, May 19, 2009 6:07 PMprosperosbks Users MedalsUsers MedalsUsers MedalsUsers MedalsUsers Medals
     
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    Hi,

    Did you get anywhere with this. I have a lot of clients that suddenly stopped authenticating to an IAS 2003 server over the weekend. I cant work out why but I get the same error. I saw this Microsoft Support article http://support.microsoft.com/default.aspx/kb/838502 but i cannot walk round every laptop and get a network cable attached to download the certificate that was working perfectly 3 days ago. I hope someone somewhere can help.
     
  • Tuesday, November 03, 2009 9:17 AMprosperosbks Users MedalsUsers MedalsUsers MedalsUsers MedalsUsers Medals
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    Turned out that the intermediaet certificate from Verisign had fallen out of the server for some reason. Downloaded a new one from thr Verisgn website installed and everything came back to life.

    • Proposed As Answer byprosperosbks Tuesday, November 03, 2009 9:17 AM
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