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  • Craig Mayers 145 posts 460 karma points
    Feb 14, 2018 @ 15:03
    Craig Mayers

    Unrecognized element 'backOffice' - version 7.8

    Hi community,

    I am having an issue with the latest version of Umbraco (v7.8.0).

    Set it up locally and everything seemed to work fine. Even the initial backoffice tour showed. I clicked don't show this again.

    I then created a few DocTypes and templates etc.

    I then added a custom Controller for my contact us page and after a building the solution in Visual studio I just keep getting this error

    Unrecognized element 'backOffice'.

    Any help would be greatly appreciated.



  • Craig Mayers 145 posts 460 karma points
    Feb 14, 2018 @ 15:16
    Craig Mayers


    I have just upgraded to v7.8.1 and the problem seems to have gone away now!

    Weird, but happy it is fixed for now so I can crack on.


  • Romeo Cadaoas 24 posts 84 karma points
    Feb 19, 2018 @ 18:33
    Romeo Cadaoas

    Installing 7.8.1 didn't resolve this for me. Anyone else having this issue?

  • Alistair Jenkins 92 posts 314 karma points
    Feb 23, 2018 @ 12:12
    Alistair Jenkins

    Hi Romeo,

    Yes, I just upgraded to 7.8.1 using NuGet and I get the same error.

    Regards, Alistair

  • LeadMagnet 1 post 71 karma points
    Mar 07, 2018 @ 12:44

    Had the exact same problem.

    Deleted the entire folder on the production host. Re-uploaded everything. Cleared it.


  • Bunnynut 118 posts 290 karma points
    May 06, 2018 @ 08:23

    I am having the same issues after updating on my dev machine. Commenting out the particular node just results in another node that is not recognized.

    I have commented out those nodes, my UrlRewriting.config was somehow missing (???). How is that possible? Copied it from another project.

    Next error: Unrecognized attribute 'trimCache'. Note that attribute names are case-sensitive. \config\imageprocessor\cache.config

    Removed that attribute and the site runs.

    However! I go to /Umbraco and get redirected immediately to umbraco#/login/false?returnPath=%252Fumbraco. Can't log in to the backend now.

    I look into the console and see the next error: Can't find function 'split' of null. Changed javascript and fixed that.

    On to the next error: No url found for api name backOfficeAssetsApiBaseUrl angular.min.js (63,106)

    HTTP417: EXPECTATION FAILED - The server cannot meet the requirements of the Expect request-header field. (XHR)GET - http://localhost:57415/umbraco/backoffice/UmbracoApi/Section/GetSections

    Are these updates tested?

  • Nik 777 posts 3092 karma points MVP c-trib
    May 06, 2018 @ 13:44

    Hi Bunnynut,

    What version of Umbraco are you running? UrlRewriting.config was removed in version 7.6 so it not being there may be intentional. It is encourage that you use the IIS Rewriting module instead to handle your rewriting needs instead of this legacy approach.

    It's frustrating when updates don't work as we expect, but the HQ does attempt to test these processes. The problem is with the flexibility of Umbraco it is likely that no two implementations are the same so problems and unforeseen issues are always possible.


  • Bunnynut 118 posts 290 karma points
    May 08, 2018 @ 07:43

    Hi Nik,

    Thank you for your reply. I apologize for my angry post but it's highly frustrating when you want to do some work and want to update Umbraco first and don't even get to the actual things you want to do. I am still unable to get it running after the update.

    I'm guessing i shouldn't have commented out the unrecognized 'backoffice' node, but how to resolve the issue posted by Craig?

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