
M365 Roundup, October 2025: Windows 10 Runs Out of Road
Windows 10 reached end of support in October 2025. Plus GPT-5 becomes Copilot's default model, Authenticator gets jailbreak detection, and Teams adds audio-only recording.
Microsoft product

Windows 10 reached end of support in October 2025. Plus GPT-5 becomes Copilot's default model, Authenticator gets jailbreak detection, and Teams adds audio-only recording.

Windows Autopilot turns 2 to 5 hours of manual device setup into a 30 to 60 minute out-of-box experience nobody in IT touches. Here is the full configuration.

New Defender and Purview add-on SKUs for Business Premium, Anthropic models in Copilot, an auto-installing Copilot app, and a browser policy that needs action now.

Microsoft kills the nonprofit Business Premium and E1 grants, raises the bar for CSP indirect resellers, and ships Copilot Tuning. May 2025's M365 changes, sorted by who has to act.

Exchange Online enforces tenant-wide outbound email limits, E5 Security arrives as a Business Premium add-on, and the Report Message add-in enters maintenance mode.

Microsoft-managed Conditional Access policies start auto-enforcing after 45 days, Skype interop in Teams dies May 1, and Hotpatch hits preview. The February 2025 changes, sorted by deadline.

Copilot Chat arrives free for Entra users, Teams flips transcription on by default for new tenants, and small businesses get live chat. The January 2025 M365 changes, sorted by what to check first.

Starting January 27, 2025, unlicensed OneDrive accounts get archived behind reactivation and storage fees, or deleted outright. Here is the math and the four ways to respond.

External collaborators do not need download rights to do their job. Two settings force guests into authenticated, browser-only access and block local downloads in SharePoint and OneDrive.

When customers demand BYOD access to Microsoft 365, contain it: web-only access, download blocks, session limits, TAP-gated enrollment, and MAM, with a dynamic group to segment personal devices.

Copilot Wave 2 ships Pages, Python in Excel, and SharePoint agents; Microsoft starts enforcing MFA for admin portals on October 15, 2024; Teams and Intune stack up quality-of-life updates.

Copilot picks up enterprise data protection and usage APIs, Autopatch and WUfB-DS merge into one service, Entra ships AiTM detection and FIDO2 provisioning, and Teams adds CAPTCHA for anonymous joins.