This could be very useful for testing a customer database on a hotfixed copy of the client without having to hotfix whatever is installed for our internal systems.You can have side-by-side installations. You cannot have two MSI-based Microsoft Dynamics NAV Windows clients on the same computer. A ClickOnce-deployed Microsoft Dynamics NAV Windows client does not interfere with other ClickOnce-deployed Microsoft Dynamics NAV Windows clients. This makes it easy to run against different servers from the same computer. For example, you could have two Microsoft Dynamics NAV Windows client installations, one for a production server and one for a test server. This also means that you can run different versions of the Microsoft Dynamics NAV Windows client side-by-side, which is not possible with MSI.
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MVP - Dynamics NAV
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NAVERTICA a.s.
We fixed some bugs that made the winclient crash when running as a ClickOnce application. We also changed how it reads the ClientUserSettings.config and PersonalizationStore.xml files; without these changes two winclients would be sharing these files which prevents you from running side-by-side.
So it's NAV 2013 only.
Developer @ Microsoft