I also strongly recommend against storing the catalog with a cloud-based storage service. The catalog, for example, cannot be stored on a network storage location.

More Detail: Because of the way Lightroom Classic is designed, it isn’t straightforward to make a catalog available on two computers at the same time.

Since that isn’t feasible, I suggest using a traveling catalog for photos captured during a trip, and synchronization to the Creative Cloud for photos you want to have available for sharing during the trip. Tim’s Quick Answer: The only dependable way I would recommend having a full Lightroom Classic catalog and the related photos on two computers is to store the catalog and photos on an external hard drive that can be moved between computers. I know a simple solution is to keep the photos and catalogs on an external hard drive, but since my data storage is all on a RAID array, that isn’t feasible. Sometimes I take trips, though, and when I take photos on those trips, I like to see the photos and edit them on my MacBook Pro laptop. Today’s Question: Can keep my photos and my Lightroom catalogs synchronized on two computers, so that they are identical? I use a desktop iMac for my photography management and serious editing.

Lightroom classic 2018