If you have more than one computer at your home to work on your photos with Lightroom, you might be wondering if there is a way to share your Lightroom catalog, so that you can work on the same images with the same catalog on multiple computers at once. Unfortunately, the database system that Lightroom runs on (SQLite) limits the catalog to be used on a single computer, on a locally attached drive. Hence, simultaneously accessing a single catalog with multiple machines is not supported and will not work. On top of that, Adobe strictly forbids placing catalogs on network volumes, because it can result in all kinds of Lightroom database corruption issues (placing photographs on a network share is supported). In short, Lightroom is a “single-user” application with no support for multi-user access. While some people have been requesting a “multi-user” edition of Lightroom, Adobe currently has no plans to make such Lightroom version due to potential complexities of such software. True multi-user applications require a server and client infrastructure, which can be too complex for most photographers to set up and use.