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  • Luke 15 posts 85 karma points
    Nov 25, 2015 @ 01:51
    Luke
    0

    upgrade failed

    Installing umbraco
    Umbraco 7

    I am now using umbraco 7.28 with Umbraco Forms. I planned to upgrade to 7.3.1. But on error jumps out during upgrade as below. I tried on both VS2013 and 2015.

    Unable to find a version of 'Microsoft.AspNet.WebPages' that is compatible with 'microsoft-web-helpers 2.1.20710.2 constraint: Microsoft.AspNet.WebPages (≥ 2.0.0 && < 2.1.0)', 'Microsoft.AspNet.Mvc 5.2.3 constraint: Microsoft.AspNet.WebPages (≥ 3.2.3 && < 3.3.0)', 'Microsoft.AspNet.WebHelpers 3.2.3 constraint: Microsoft.AspNet.WebPages (≥ 3.2.3 && < 3.3.0)'.

    Please consider this if it is valuable. Thanks.

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  • James Wilkinson 15 posts 72 karma points c-trib
    Nov 26, 2015 @ 01:39
    James Wilkinson
    0

    Hi Luke,

    I had the same issue when upgrading from v7.2.4 to v7.3.1 using NuGet.

    Firstly, ensure you have have a backup of all your files :)

    I managed to work around the problem by commenting out the following two lines in packages.config:

    <package id="Microsoft.AspNet.Web.Helpers.Mvc" version="2.0.20710.0" targetFramework="net451" />
<package id="microsoft-web-helpers" version="2.1.20710.2" targetFramework="net451" />

    When you have done that, try the Umbraco NuGet update again. If the update works, rebuild your solution and try running your site.

    Hope that helps,

    James.

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