October Windows updates are destabilizing on-prem Exchange Servers right now - hold or remediate before your mail queues stop moving. Meanwhile, Microsoft 365 E7's agent insider risk controls and new Defender for Identity alerts round out a week heavy on operational urgency.
Agent 365 lands with cross-vendor AI governance controls, a Critical Windows Secure Kernel EoP vulnerability needs patching, and September Exchange Server security updates are out.
Official Microsoft deployment and setup guides for Intune, Defender, Entra, Copilot, Purview, and Viva, organized by Modern Work practice area, plus what actually changes across Commercial, GCC, GCC High, and DoD.
Exchange Server SE gets its August security updates while CU1 slips further, and a wave of CVE acknowledgment updates signals an active patch cycle. Engineers also get new Defender for Identity tooling, granular Purview audit logs on the horizon, and a useful roundup of Windows device recovery options.
Entra Tenant Governance hits GA for multi-tenant control at scale, Defender for Identity expands sensor v3.x coverage to AD FS, AD CS, and Entra Connect, and the Copilot Domain Exclusion feature gets quietly rolled back - a lot moved this week.