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Microsoft Microsoft 365 Apps Monthly Enterprise Channel Update Version Version 2512 (Build 19530.20226)

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Update Summary

Version 2512 (Build 19530.20226) includes security updates, a OneNote proofing language improvement, and fixes for Outlook, Excel, PowerPoint, and Word. It also adds the `Office.context.mailbox.ews.diagnostics.getTokenStatusAsync` API for Outlook event-based add-ins.

Update Details

Bug Fixes

  • Fixed an issue that could make Microsoft 365 applications unresponsive during profile card-related activities in Excel, PowerPoint, and Word.
  • Fixed an issue that sometimes prevented users from opening emails with the Encrypt Only label in Outlook.
  • Fixed a rare collaboration-session issue where the latest document changes could be overwritten by another user or device.

New Features

  • OneNote now applies the chosen proofing language more consistently across paragraphs when writing in multiple languages.
  • Added the Office.context.mailbox.ews.diagnostics.getTokenStatusAsync API for Outlook event-based add-ins.
Product Information

Vendor: Microsoft

Product: Microsoft 365 Apps

Product type: Other

Application category: Business

Platform: Windows

Variant: Monthly Enterprise Channel

Version: Version 2512 (Build 19530.20226)

Vendor release date: Feb 10, 2026

Published on updatealert.io: Jun 4, 2026

Description: Office productivity applications for business communication and document work.

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