Microsoft Microsoft 365 Apps Monthly Enterprise Channel Update Version Version 2604 (Build 19929.20264)
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Update Summary
Microsoft Office security updates for Microsoft 365 Apps Monthly Enterprise Channel Version 2604 (Build 19929.20264). The article also notes various fixes to functionality and performance.
Update Details
Security
- Security updates included in Microsoft Office updates.
Bug Fixes
- Various fixes to functionality and performance.
Hints
- Support for Office 2019 ended on October 14, 2025.
- This release note applies to Microsoft 365 Apps for enterprise and business, plus several Office editions across supported channels.
Links
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Microsoft Office security updates release notes
https://support.microsoft.com/office/release-notes-for-microsoft-office-security-updates-8f3c2f0f-4f2f-4f1d-9f0d-0f0f0f0f0f0f
Product Information
Vendor: Microsoft
Product: Microsoft 365 Apps
Product type: Other
Platform: Windows
Variant: Monthly Enterprise Channel
Version: Version 2604 (Build 19929.20264)
Vendor release date: Jul 14, 2026
Original release notes: View on vendor site
Published on updatealert.io: Jul 16, 2026
Description: Office productivity applications for business communication and document work.