Description of the security update for SharePoint Server 2016 Language Pack: August 11, 2026 (KB5002906)

Applies To
SharePoint Server 2016

Summary

Important

  • If you're running Microsoft SharePoint Server 2013-type workflows, you must install the August 2025 update for SharePoint Workflow Manager to your farm before you install this cumulative update.
  • If you're currently running the Classic version of Workflow Manager, you have to enable the debug flag in order to continue using it:
      $farm = Get-SPFarm
      $farm.ServerDebugFlags.Add(53601)
      $farm.update()
      iisreset

This security update resolves a Microsoft Office Remote Code Execution vulnerability, Microsoft SharePoint Server Spoofing vulnerability, Microsoft SharePoint Elevation of Privilege Vulnerability, Microsoft SharePoint Server Tampering Vulnerability, and Microsoft SharePoint Server Information Disclosure vulnerability. To learn more about the vulnerabilities, see the following security advisories:

Note

  • This is build 16.0.5561.1001 of the security update package.
  • To apply this security update, you must have the release version of Microsoft SharePoint Server Subscription Edition installed on the computer.

This public update delivers Feature Pack 2 for SharePoint Server 2016. Feature Pack 2 contains the following feature:

  • SharePoint Framework (SPFx)

This public update also delivers all the features that were included in Feature Pack 1 for SharePoint Server 2016, including the following:

  • Administrative Actions Logging

  • MinRole enhancements

  • SharePoint Custom Tiles

  • Hybrid Taxonomy.

  • OneDrive API for SharePoint on-premises

  • OneDrive for Business modern user experience (available to Software Assurance customers)

The OneDrive for Business modern user experience requires an active Software Assurance contract at the time that the experience is enabled, either by installation of the public update or by manual enablement. If you don't have an active Software Assurance contract at the time of enablement, you must turn off the OneDrive for Business modern user experience.

For more information, see the following Microsoft Learn articles:

Improvement and fixes

This security update contains an improvement and a fix for the following nonsecurity issue in SharePoint Server 2016 Language Pack:

  • Disables file-backed Business Data Connectivity (BDC) model import by default to improve security. Use the Enable-BdcmFileImport PowerShell cmdlet to enable this functionality for a site collection.

  • Notifies that the SharePoint 2010 Workflow feature will be disabled starting with the September 2026 Public Update. Use the Enable-SPLegacyWorkflow cmdlet to enable the feature for a site collection.

  • Disables the ExecuteProxyUpdates feature. Use the Enable-SPWebPartPagesProxyUpdates cmdlet to enable the feature for a site collection, or the Disable-SPWebPartPagesProxyUpdates cmdlet to disable it immediately.

  • Notifies that the ToolPane feature will be disabled starting with the September 2026 Public Update. Use the Enable-SPToolPane cmdlet to enable ToolPane for a site collection.

  • Notifies that orphaned Remote Event Receivers (RERs) that do not have an app identifier will be blocked starting with the November 2026 Public Update. Use the Get-SPOrphanedRemoteEventReceiver cmdlet to identify affected RERs.

  • Adds an advisory for SharePoint 2013 workflows.

How to get and install the update

Method 1: Microsoft Update

This update is available from Microsoft Update. When you turn on automatic updating, this update will be downloaded and installed automatically. For more information about how to get security updates automatically, see Windows Update: FAQ.

Method 2: Microsoft Update Catalog

To get the standalone package for this update, go to the Microsoft Update Catalog website.

Method 3: Microsoft Download Center

You can get the standalone update package through the Microsoft Download Center. Follow the installation instructions on the download page to install the update.

  • [Download security update for Microsoft SharePoint Server 2016 Language Pack (KB5002906)](https://www.microsoft.com /download/details.aspx?id=108759)

More information

Security update deployment information

For deployment information about this update, see Deployments - Security Update Guide.

Security update replacement information

This security update replaces previously released security update 5002892

File hash information

File name SHA256 hash
wssloc2016-kb5002906-fullfile-x64-glb.exe 92740A4EA39EF91F38971F01783BCF0AE64AEA678B8EC85BA3B413193D3F7CD6

File information

Information about protection and security

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