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  • Craig O'Mahony 364 posts 918 karma points
    Jul 06, 2017 @ 13:18
    Craig O'Mahony

    Hi all,

    I'm attempting to upgrade my Umbraco install from 7.2.5 to 7.3.0...I've used the nuget PM to perform the update (update-package umbracocms 7.3.0) and I've followed the version specific instructions on I've also compared and amended my existing config as per these instructions.

    But (there's always a but!) I'm getting the error:

    Assembly 'System.Web.Http, Version=, Culture=neutral, PublicKeyToken=31bf3856ad364e35' uses 'System.Net.Http.Formatting, Version=, Culture=neutral, PublicKeyToken=31bf3856ad364e35' which has a higher version than referenced assembly 'System.Net.Http.Formatting, Version=, Culture=neutral, PublicKeyToken=31bf3856ad364e35'  C:\Users\comahony\GitKraken\ICA\ICASolution\bin\System.Web.Http.dll 

    and I can't get past it.... my config setting for this assembly is:

        <assemblyIdentity name="System.Net.Http.Formatting" publicKeyToken="31bf3856ad364e35" culture="neutral" />
        <bindingRedirect oldVersion="" newVersion="" />

    Does anyone have any ideas please?

    Thanks, C

  • Sebastiaan Janssen 4988 posts 15101 karma points MVP admin hq
    Jul 07, 2017 @ 13:29
    Sebastiaan Janssen

    Upgrade to 7.3.1 to get this fixed :-)

    Also, 7.6 is definitely the preferred version now, go all the way for bug fixes (very) necessary security updates etc. It's usually easier to just go straight to the latest version. Unfortunately we have a bug we're working on currently so it's best to go to 7.5.14 and then to 7.6.3.

  • Craig O'Mahony 364 posts 918 karma points
    Jul 10, 2017 @ 07:01
    Craig O'Mahony

    Hi Sebastiaan,

    I tried to go for 7.6 the first time I upgraded but ran into the same problem. All of the new assemblies were copied across and the config settings look correct but I can't build the solution because of this assembly error.

    Thanks, C

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