Keep in mind that:
: For those looking to migrate, Microsoft still hosts toolkits on Microsoft Learn specifically for upgrading from NAV 2009 R2 to newer versions like NAV 2015. System Requirements for Installation microsoft dynamics nav 2009 r2 download
: You can still find specific hotfixes , service packs , and language modules on the Microsoft Support site. However, these typically require an existing installation to be useful. Keep in mind that: : For those looking