SuperUser Account / Monday, September 2, 2013 / Categories: DotNetNuke DotNetNuke: An entry with the same key already exists - Error If you receive the following error: Message: DotNetNuke.Services.Exceptions.ModuleLoadException: An entry with the same key already exists. ---> System.ArgumentException: An entry with the same key already exists. at System.ThrowHelper.ThrowArgumentException(ExceptionResource resource) at System.Collections.Generic.SortedList`2.Add(TKey key, TValue value) at DotNetNuke.Entities.Modules.DesktopModuleController.GetPortalDesktopModules(Int32 portalID) at DotNetNuke.UI.ControlPanels.IconBar.BindData() at DotNetNuke.UI.ControlPanels.IconBar.Page_Load(Object sender, EventArgs e) --- End of inner exception stack trace --- Cause: This is likely due to duplicate Keys in the DeskTopModules table. In our case we had a third party Google Analytics Module installed and the newer versions of DNN 5.x include Google Analytics as part of the core. Apparently during the upgrade process DNN inserts a new record in the DeskTopModules table that uses the same FriendlyName as the existing 3rd party Google Analytics Module already in use therefore creating a conflict. Resolution: Open the DesktopModules table and sort by FriendlyName Ascending locate the duplicate key and give one of the duplicates key a unique name. Restart your website - found under hosting settings - and the problem should disappear. Previous Article How to Choose an Online Marketing Consultant Next Article Could not load file or assembly 'Telerik.Web.UI' Print 7018 Rate this article: No rating 5 comments on article "DotNetNuke: An entry with the same key already exists - Error " Nice. Help to figure out the issues. 9/2/2013 2:46 AM Thank you for valuable info. 12/5/2013 10:20 PM Thank's for the hint!Solved my Problem!! 12/25/2013 6:54 AM Life saver!!!! 1/16/2014 3:17 AM Thanks ever so much it sent me in the right direction. 6/10/2014 9:33 AM Please login or register to post comments.