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  • TS connection refused due to 'security error'

    Hi.

    I have been working on this for several hours and it's kind of a weird situation.

    Thin clients get a message of "Because of a security error, the client cannot connect". Interestingly, straight RDP clients do not get that error at all. The RDP version is RDP 7.

    I do not see any errors in the GPO processing on the target TS server which is running 2003 Terminal Services. I have tried 2 different thin clients: an Evo compaq and HP's T5520 which has the latest firmware.

    Has anyone had experience with solving this particular issue?

    Thanks in advance.

    James

  • #2
    Re: TS connection refused due to 'security error'

    there was some major changes to RDP security with w2008 - notably, the options to request or require securit on RDP connections.. is this hitting u ?
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    • #3
      Re: TS connection refused due to 'security error'

      Hi.

      Well what I am seeing is that this TS is a remote DC. At the moment, we only use 2003 Terminal Servers. It seems as though it can't find the Licensing but I am not entirely sure that is the issue. There are no errors in the system, application, DNS or FRS logs.

      Essentially we have a TS/DC in each remote site with replication. Our licensing servers are back here at the head office. I can manually specify the license servers but it should automatically discover them.

      I am confused by this error!

      --james

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      • #4
        Re: TS connection refused due to 'security error'

        This issue can releated for NLA settings or even a missing license server (for exmaple).
        Best Regards,

        Yuval Sinay

        LinkedIn: https://www.linkedin.com/in/yuval14, Blog: http://blogs.microsoft.co.il/blogs/yuval14

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        • #5
          Re: TS connection refused due to 'security error'

          Had to delete some reg keys and disable/enable licensing server to make this work.

          Thanks for the help with this issue!

          --james

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