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iOS error - connection to the server was suspended

  • 1.  iOS error - connection to the server was suspended

    Posted Jan 11, 2019 04:36 PM
    ​​Hi

    We are trying to get NAV 2016 working on our iOS devices (iPads and iPhones).  However, we are getting consistently getting a "the connection to the server was suspended" Resume error message immediately after connecting.  We have tried Safari, Chrome, Edge and Firefox on the devices and still get the error.  On relatively rare occasions, we get it on Windows devices when using Chrome, but generally don't have any issues using the web client on Windows.  We are using https on web servers that are not externally facing.

    Are we missing something on our web servers' setups or a prerequisite on our iOS devices?

    Thanks
    Jim

    ------------------------------
    Jim Bates
    Sr. Programmer/Analyst
    Samaritan's Purse
    Boone NC
    ------------------------------
    NAVUG Summit - Post


  • 2.  RE: iOS error - connection to the server was suspended

    TOP CONTRIBUTOR
    Posted Jan 15, 2019 08:47 PM
    I would check within the Event Viewer where the service is running. It should provide you some more details of what's causing it.

    ------------------------------
    Kristoffer Ruyeras
    Tigunia
    Seattle, WA
    ------------------------------

    NAVUG Summit - Post


  • 3.  RE: iOS error - connection to the server was suspended

    Posted Jan 17, 2019 10:54 AM
    ​Thanks Kris.  We restarted the web server and finally saw an error message in the event viewer, but none after that.  It looks like it might a SPN/Kererbos configuration issue of some sort.  We are now at this message and hopefully we will be able to find a solution.  I'll post it when we get it. 

    The Kerberos client received a KRB_AP_ERR_MODIFIED error from the server navservice. The target name used was host/navdev.ourdomain.org. This indicates that the target server failed to decrypt the ticket provided by the client. This can occur when the target server principal name (SPN) is registered on an account other than the account the target service is using. Ensure that the target SPN is only registered on the account used by the server...
    Thanks,
    Jim



    ------------------------------
    Jim Bates
    Sr. Programmer/Analyst
    Samaritan's Purse
    Boone NC
    ------------------------------

    NAVUG Summit - Post


  • 4.  RE: iOS error - connection to the server was suspended

    TOP CONTRIBUTOR
    Posted Jan 17, 2019 12:08 PM
    Ah! SPNs are tricky but your network admin should be able to track that down. Let me know how it works out with SPN registration. You may need to move the service separately. With a few clicks in Active Directory, that allows the account the ability to write public.

    ------------------------------
    Kristoffer Ruyeras
    Tigunia
    Seattle, WA
    ------------------------------

    NAVUG Summit - Post


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