Office and Windows Updates

Track the latest Microsoft 365 Apps, Windows 10, and Windows 11 releases with version numbers, builds, and key dates

Microsoft 365
- Channels
- Version
Windows
- Win 11
- Win 10
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Last Updated
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Important Notice

This site is not affiliated with Microsoft Corporation. Information is sourced from official Microsoft documentation and may include personal considerations. Refer to Microsoft's official documentation for authoritative information.

About This Site

Purpose, scope, and context

This site tracks Microsoft 365 Apps (formerly Office 365 ProPlus) releases across the main update channels, as well as Windows 10 and Windows 11 operating system releases. It provides a consolidated view of version numbers, builds, and key lifecycle dates so you can quickly assess currency and plan deployment rings.

  • What you get: Latest versions per channel/product + full release histories
  • Data freshness: Timestamp shown (UTC + local tooltip)
  • JSON API: Simple endpoints for automation / dashboards
  • Visual cues: Relative recency indicators & styled tags
  • Use cases: Patch status checks, tenant hygiene reviews, OS deployment planning
  • Audience: IT admins, deployment engineers, security teams
  • Approach: Read‑only aggregation of Microsoft‑published data
  • Scope: Client app channels + Windows OS releases
Key Concept: Update Channels

"Microsoft 365 Apps" is the subscription, continuously serviced edition of the Office desktop apps. Update channels exist so organizations can balance speed of feature delivery vs predictability and validation time.

Learn more about update channels

Latest Office 365 Versions

Current releases across all update channels

Channel / Details Version Build Latest Release First Available End of Service

Current Channel

Latest features as soon as ready

Get the newest Office features as soon as they're released. Updated multiple times per month.

View Current Channel

Monthly Enterprise

Predictable monthly updates

New features once a month on a predictable schedule for enterprise environments.

View Monthly Enterprise

Semi-Annual Enterprise

Twice yearly updates

Feature updates twice per year for organizations that need extended testing periods.

View Semi-Annual

Windows Operating System Releases

Track Windows 10 and Windows 11 versions and updates

In addition to Microsoft 365 Apps, this site also tracks Windows 10 and Windows 11 releases. Monitor version numbers, build updates, and servicing timelines for both operating systems.

Windows 10

Access comprehensive version history and build information for Windows 10, including all major releases and servicing updates.

View Windows 10 Releases
Windows 11

Explore Windows 11 release information, including the latest versions, builds, and upcoming updates with advanced filtering options.

View Windows 11 Releases

Need all versions? Visit the consolidated Windows releases page to see both Windows 10 and Windows 11 data together.

Developer API

Programmatic access to version data

Access Office 365 and Windows release data programmatically through our REST API.

Microsoft 365 Apps Endpoints:
Latest Versions Full Docs
Windows Releases Endpoints:
All Releases Windows 10 Windows 11

Data Sources

Official Microsoft documentation

All information is sourced from official Microsoft release notes and update documentation.

Microsoft 365 Sources:
Update Channels Update History