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  • Madura Silva 27 posts 79 karma points
    Sep 24, 2013 @ 02:42
    Madura Silva

    Item has already been added. Key in dictionary: '28' Key being added: '28'

    One of my client is complaining about the Item has already been added. Key in dictionary: '28'  Key being added: '28'  error..

    They are doing lot of activities on backend of the website and site has roughly 2000 nodes. This error cannot reproduce because it appears rarely. Tested both cmsLanguageText & cmsDictionary tables but no duplicates found.

    Touching the web.config or refresh app pool is not a permanent solution. So I'm looking for a permanent fix for this. 

    There is no any fix I found on the Umbraco forum so it would be great if someone can guide me to fix this / some tips.


    Umbraco version: 4.7.1 (Assembly version: 1.0.4281.20201)

    IIS version: 6

    .NET framework: 4.0

  • UmbracoNewb 31 posts 53 karma points
    Nov 12, 2015 @ 09:53

    Was this ever solved, I have the same issue on umbraco v

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