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Connection error after SQL server upgrade

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New Member

New Member


    I recently upgraded my sql server version from 2016 to 2017. Now I get 'DNN Error Connection To The Database Failed' on all of my local DNN sites. My server name is the same. I have resynced logins but it does not seem to help. 

     Has anyone expericened this issuse and wouldn't mind sharing a resoultion?

    Please help! Thank you!

    Veteran Member

    Veteran Member

      are you using same instance name for your new SQL server - otherwise you'll need to adopt the connection string in the web.config file of your DNN instance. Also make sure, if not using integratedsecurity in your connection string, that you need to setup your SQL Server for mixed authentication,

      Veteran Member

      Veteran Member

        You may need to enable mixed-mode authentication on the new SQL Server.
        Joe Craig
        DNN MVP
        Patapsco Research Group

        Veteran Member

        Veteran Member

          @raymondvazquez Did you manage to resolve this issue?
          Will Strohl

          Upendo Ventures DNN experts since 2003
          Official provider of the DNN-based E-Commerce w/ Hotcakes Commerce Cloud and SLA support
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