Microsoft is developing a Microsoft Purview Compliance Portal capability, Roadmap ID 499076, that will let administrators scan existing files at rest in SharePoint and OneDrive for Business for sensitive information, with general availability planned for December 2026 across GCC, GCC High, and DoD clouds. The feature, last updated on July 6, 2026, looks narrow on the roadmap but lands in one of Microsoft 365’s most uncomfortable security gaps: old content that predates today’s labeling, DLP...