Starting April 2026, Microsoft Purview Endpoint DLP will enable detection and blocking of egress activities on unsaved files before they're saved, enhancing data loss prevention. This feature is off by default, requires admin setup, and needs devices running anti-malware Client version 4.18.26020 or later.
Applies to: Microsoft Purview
Source: mc.merill.net — data via Merill Fernando's open archive (MIT).