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This security update resolves a Microsoft SharePoint Server information disclosure vulnerability and Microsoft SharePoint Server remote code execution vulnerability. To learn more about the vulnerabilities, see the following security advisories:​​​​


  • This is build 16.0.17328.20292 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.

Improvements and fixes

This security update contains fixes for the following nonsecurity issues in SharePoint Server Subscription Edition:

  • Fixes an issue in which you cannot add a new server to an existing SharePoint farm if the farm contains a certificate that's managed by the Certificate Management feature.

  • Fixes an issue in which Microsoft Office documents are downloaded instead of being opened in Office Online when you select search results on the modern search page.

  • Fixes an issue in which the tag dialog box doesn’t open when you select the Add Tag icon for the Managed metadata column field in the details pane.

  • Fixes an issue in which the Quick links web part still opens the link on a new browser tab when you change an external link to an internal link.

  • Fixes an issue in which you cannot open an event item that has an attachment in the Events web part on a modern page.

  • Fixes an issue in which updates to list items do not appear in the modern UI until the page is refreshed.

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.

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 5002581.

File hash information

File name

SHA256 hash



File information

Download the list of files that are included in security update 5002599.

Information about protection and security

Protect yourself online: Windows Security support

Learn how we guard against cyber threats: Microsoft Security

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