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  • Leo Jebran 9 posts 112 karma points
    Jan 19, 2025 @ 14:22
    Leo Jebran
    0

    Upgrading Umbraco V13 to V15 - Backoffice ambiguous error

    Trying to upgrade a project to Umbraco V15

    updated all the package versions in the csproj file to most current version available

    "Umbraco.Cms", "Umbraco.Forms" "Umbraco.Cms.Core", "Umbraco.Cms.Infrastructure" to 15.1.1

    "Umbraco.Forms.Deploy" , "Umbraco.StorageProviders.AzureBlob" and "Umbraco.StorageProviders.AzureBlob.ImageSharp" to 15.0.0

    when rebuilding the project I'm getting the following error

    The call is ambiguous between the following methods or properties: 'Umbraco.Extensions.UmbracoApplicationBuilderExtensions.UseBackOffice(Umbraco.Cms.Web.Common.ApplicationBuilder.IUmbracoApplicationBuilderContext)' and 'Umbraco.Extensions.UmbracoApplicationBuilderExtensions.UseBackOffice(Umbraco.Cms.Web.Common.ApplicationBuilder.IUmbracoApplicationBuilderContext)'
    

    on the AddBackoffice(), UseBackoffice() and UseBackOfficeEndpoints() in the startup file

    ideas?

    please and thank you.

  • John P Scott 20 posts 78 karma points
    Jan 20, 2025 @ 17:43
    John P Scott
    1

    I tried this the other week and got a similar error. I think the backoffice is new in v15.

    Try firing up a new Umbraco 15 project and comparing the startup/program files with what you have in V13.

    I found lots of breaking changes in my project - it was using Block Grid custom edit views and they are done completely differently. In the end I rebuilt the site from scratch. I can't remember whether I solved the startup code issue.

    Good luck

    John

  • Leo Jebran 9 posts 112 karma points
    29 days ago
    Leo Jebran
    0

    Turns out I had uSync installed, so I needed to update it as well.

    I also had to delete all the models since they were using IPublishedSnapshotAccessor, which has been removed.

    I commented out some code to get the project to start and then rebuilt the models.

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