[KBA-77679] All cameras temporarily go offline after adding a camera to an Archiver
This article explains why cameras go offline temporarily after being added to an Archiver in Security Center 5.6 GA and 5.6 SR1.
After adding a camera to an Archiver, all cameras on that Archiver drop offline for a few seconds.
This issue occurs due to a timing problem.
This issue is resolved in Security Center 5.6 SR2 and later.