Photoshop/Lightroom: Adobe Application Manager is 32 bit, deprecated on Macintosh. Need 64 bit version.

Current version fo Creative Cloud (2019) applications have 64-bit licensing. If you're seeing this error, it's likely you have older versions of our software still installed on your computer.

No issues with 32 bit on Mojave. No issues until th the next major OS. We have time.

The next version of MacOS X will normally not be out before September 2019. On MacOS X Mojave you will get one warning per month, so this is hardly an issue and Adobe obviously knows about it...

Jeffrey,

I still have these and a couple more ADOBE 32 bit apps on my Mac. 

Either they are

Still being used by Adobe and are still 32 bit
Are old Applications that Adobe did NOT clean up on installation of new software.  I am betting on this one as Adobe has never been good at cleaning up after itself with upgrades.

Which one is it?

You don't need them if the older applications are gone. I still use (occasionally for the time being), GoLive so I too have some of these items. But with the next major release of MacOS, IF one upgrades, none of this will run anyway. If you've got 'modern' versions of Adobe software, certainly CC stuff, you don't need that old stuff and yeah, the uninstaller's don't always find and remove all this stuff. 

Looks like "Adobe Application Manager" app was replaced by the "Creative Cloud" app some time ago.  I updated the Creative Cloud app on my Mac just to make sure I am current.   I don't know what caused the old "Adobe Application Manager" app to start up, very strange.  

I have a Mac with Mojave that didn't have old software on it, I reformatted it and installed Mojave and CC from scratch about three months ago. I get that AAM warning too.