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Microsoft Dynamics NAV is a 32-bit applications. A 64-bit Windows operating system supports both 32-bit applications and 64-bit applications. Therefore, you can run Microsoft Dynamics NAV on a computer that is running a 64-bit version of the Windows operating system by using the Windows on Windows (WOW) 32-bit compatibility mode.
Since Microsoft Dynamics NAV is designed as a 32-bit application, you may experience some compatibility issues when you run Microsoft Dynamics NAV on a computer that is running a 64-bit version of the Windows operating system. The documented compatibility issues are described in the following Microsoft Knowledge Base articles.
Installation issues that you may experience when you try to install Business Notification in Microsoft Dynamics NAV in a 64-bit environment.
Commerce Gateway is not supported on a 64-bit computer
The Microsoft Dynamics NAV communication components do not work on a computer that is running a 64-bit operating system
Error message when you install the Microsoft Dynamics NAV Employee Portal components on a computer that is running a 64-bit operating system: “Sharepoint Services are not installed on the system”
Important Notice to Customers
We recommend that you contact your Microsoft Dynamics Partner before installing service packs or hot fixes. It is important to verify that your environment is compatible with the service pack(s), hotfix(es), or download(s) being installed. A service pack, hotfix, or download may cause interoperability issues with customizations, and third-party products that work with your Microsoft Dynamics solution.
For technical support questions, contact your partner or, if enrolled in a support plan directly with Microsoft, you can enter a new support request to Microsoft Dynamics Technical Support from Customer Source or Partner Source under Support >> New Support Request.