DLP for Microsoft 365 Copilot is four behavior, Microsoft's own sources disagree on their status

"DLP for Microsoft 365 Copilot" gets talked about as one switch. Microsoft Learn now documents four behaviors, on four different schedules, and they still do not share one status.

Restricting Copilot from processing sensitivity-labelled files and emails comes closest to settled. Roadmap 557255 reads "Launched", General Availability, dated April 2026. Learn states only that the feature "is available", without naming a release stage.

The behavior that blocks external web search when a prompt contains sensitive info types shows on Microsoft 365 Roadmap 548671 as "Launched", while Learn gives that section no status at all. That same roadmap record carries both General Availability and Preview tags. Message Center MC1263277 was the rollout notice; it expired 31 July 2026.

Blocking sensitive info typed into the prompt is the contested one. Roadmap 515945 has read "Launched", General Availability, since 14 May 2026, while Learn, edited since, still says the feature is in preview and rolling out. Verify it in your tenant before you rely on it.

External email as grounding data runs the opposite way: Learn tags it "(preview)", while Roadmap 561552 reads "In development" with GA scheduled for January 2027.

A setup detail that catches teams out: this is configured only through the Custom DLP template, and selecting the Copilot location disables all other locations in that policy. Confirm what content DLP actually evaluates rather than assuming it.

Before you map "DLP covers Copilot," decide which of the four behaviors you need and verify each one's status in your own tenant.