Adobe has removed the direct download links for Lightroom 6 from their primary product pages. In many cases, you must log into your Adobe ID account and check your "Order History" or "Registered Products" to find a link to the installer you previously purchased.
With the introduction of the Creative Cloud, Adobe moved to a subscription model. You no longer own the software; you rent it. If you stop paying the monthly fee, the software eventually locks you out of your edits (though you can still access your catalog metadata). lightroom 6 download standalone
Even though it is standalone, Adobe requires a one-time sign-in to verify the license. Modern Standalone Alternatives Adobe has removed the direct download links for