Overview

Artifactory supports two kind of offline cases: when the whole organization is disconnected from remote repositories and when one or more remote repositories needs to be put offline.

Organization-wide Offline

In this case, remote repositories serve as caches only and do not proxy remote artifacts. This is common in organizations that are using a separate secured network (such as military or financial institutes) and are disconnected from the rest of the world.
In such cases, you can turn on (and off) the Global Offline Mode flag, under Admin:Configuration:General.

Single Repository Offline

A less rigid case is where one or more remote repository has become offline for some reason. In this case, it is possible to tell Artifactory to treat the individual remote repository as offline, so that only artifact already present in the cache will be used.