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"Activation failed. Undefined error" when trying to activate device

Been unable to activate some iOS devices since around late September to now. Initially the problem appeared when trying to enrol a new iPod, so I went back and checked another device (iPad) which we had enrolled successfully earlier, removed that device from SMC and re-added it and it is hitting the same brick wall of not being able to activate the device in the SMC app. The worst part is, the error message doesn't give you a lot to go on, the text only reads: "Undefined error. Please try again later or contact your administrator". 

I have tried resetting the device and starting from fresh but still running into the same issues. Have tried activating both manually and from clicking on the link on the webpage. 

Both devices are on iOS 11.0.1. We have another iPad (well another 5 iPads) which are identical to the device both in hardware and set up which is having the issue and they seem work fine. 

 

Any ideas of what to try or what could be causing the error? 



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  • No, I'm sorry, but that's not correct.  I've performed this test from three different LANs (with different firewalls, all of which have NO outbound filtering and for fun-sake I've tested with ALL inbound filtering TURNED OFF).  I've also performed it from two different iphones that were NOT on wifi, but rather cellular data.  The screenshot I sent just happens to be my current test device, as I don't have direct access to the client devices at all times. 

     

    I just performed another test bypassing our firewall:

     

    1. Put my cellphone into tether mode.

    2. Connected this ipad to my cellphone's wifi hotspot, so that it is now riding over my ATT cellular data plan.

    3. Confirmed that _no_ firewall is in place on my phone.

    4. Tested again.

    5. It failed to enroll.  Again.

     

    This is not a local connection issue.

     

    I _need_ some more visibility into this.  Like I said, the log files that I pulled from the device were _empty_.  Can you give me any access to the logs from our Sophos Central?  I have absolutely nothing to work with here and the client is getting incredibly impatient with the lack of a solution. 

     

    They're at the point now where they're asking us to not use Sophos.  

  • The same problem here with Sophos Central.

    iOS Device with 11.1.2 and the same notification "Activation failed. Undefined error".

    Any new ideas to solve the problem?

    Greetings.