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Office Online Server OOS Office Online Server Update
Patch Tuesday

KB5002895

KB5002895: Cumulative update for Office Online Server, version OOS, August 2026. The previous server security package is superseded

In short

This package replaces KB5002884 and requires the release version of Office Online Server. It can request a restart.

Does it affect you? Applies to: Computers running the release version of Microsoft Office Online Server. The update package is for x64.

Build
16.0.10417.20197
Restart
Required
Review notes Additional details from the official release notes (1) Read note
  • What changes This security update package is build 16.0.10417.20197.

The official sources are linked at the end of the page.

What changes

Improvement 1 change

Security update replacement

  • This package replaces the previously released security update KB5002884.1

Technical details

Data sheet · Security · Downloads · Components Click to collapse or expand

Data sheet

Released
2026-08-11
Classification
Security Updates
Type
Cumulative update
Restart
Required
Replaces
KB5002884, KB5002875, KB5002871, KB5002855
+18 earlier KB5002846, KB5002835, KB5002824, KB5002817, KB5002801, KB5002797, KB5002776, KB5002752, KB5002740, KB5002728, KB5002707, KB5002699, KB5002690, KB5002679, KB5002677, KB5002648, KB5002601, KB5002503
Replaced by
KB5002910
VersionBuildChannel
OOS 16.0.10417.20197 General availability

Security

No vulnerabilities are listed for this update.

Downloads (Microsoft Update Catalog)

Package OOS
1.0 GB
wacserver-x-none.cab Main update · KB5002895 SHA-1: 0053a748…c85939

Sources

Updated
Cited passages from Microsoft's official notes (1)
  1. 1. This security update replaces previously released security update 5002884 support.microsoft.com
Checked automatically: 8 of 8 checks passed, 1 quoted passage · compared with Microsoft's page on Oct 16, 2026
  • Quotes found in the official pages: passed
  • Numbers found in the sources: passed
  • Vulnerabilities from the dossier only: passed
  • Links to allowed domains only: passed
  • Every official change covered: passed
  • Readable plain text: passed
  • Changes confirmed by the file list: passed
  • Sources agree: passed

A second AI read the text against the sources: correctness 5/5, clarity 4/5, completeness 3/5. How we work

Published by The Update Bureau. Written with AI from Microsoft's own documents, checked by rules and a second AI. How we work · Report a mistake