Key Dates

Upcoming Microsoft 365 rollout milestones, feature retirements, and compliance windows — organized by Zero Trust pillar. Not everything here requires action; use the Applies to note to decide if it's relevant to your environment.

Last updated: 2026-06-09 · ← Back to homepage

Identity

2 deadlines

Jun 15, 2026

CA Resource Exclusion Enforcement

Applies to All tenants with Conditional Access policies

Test apps with 'All resources' CA exclusions before enforcement. Run CA What-If in non-prod.

Jul 1, 2026

Entra Connect → Cloud Sync Migration

Applies to Hybrid identity orgs running Entra Connect

Begin readiness assessment now, especially if you have write-back scenarios or custom sync rules.

Devices

2 deadlines

Jun 30, 2026

Secure Boot 2023 Certificates

Applies to Windows device fleets (Intune or SCCM managed)

Check Secure Score. Deploy May 2026 CU across fleet before cert expiry.

Aug 1, 2026

Ubuntu 22.04 LTS EOS (Intune)

Applies to Intune-managed Linux fleets

Identify 22.04 devices in Intune and start upgrade comms. New enrollments blocked after EOS.

Data

2 deadlines

Jul 1, 2026

Purview Lifecycle Archiving GA

Applies to Orgs with Purview E3 or E5 licensing

Scope retention policies for OneDrive/SharePoint now to maximize benefit at GA.

Jul 1, 2026

Purview Lifecycle Insights GA

Applies to Orgs with Purview E3 or E5 licensing

Plan review of Purview recommendations; align with DLP and labeling strategy.

Visibility & Automation

1 deadline

Jul 1, 2026

Work IQ Researcher Agent GA

Applies to Microsoft 365 Copilot subscribers

Have agentic workflow integrations tested from the June preview window.