Introduction
Microsoft released the following security updates for Office in October 2026. These updates are intended to help our customers keep their computers up to date. We recommend that you install all updates that apply to you.
To download an update, select the corresponding Knowledge Base article in the following list.
List of Office updates released in October 2026
Microsoft Office 2016
| Product | Knowledge Base article title and number |
|---|---|
| Excel 2016 | Description of the security update for Excel 2016: October 13, 2026 (KB5002934) |
SharePoint Server Subscription Edition
| Product | Knowledge Base article title and number |
|---|---|
| SharePoint Server Subscription Edition | Description of the security update for SharePoint Server Subscription Edition: October 13, 2026 (KB5002927) |
Office Online Server
| Product | Knowledge Base article title and number |
|---|---|
| Office Online Server | Description of the security update for Office Online Server: October 13, 2026 (KB5002928) |
SharePoint Workflow Manager
| Product | Knowledge Base article title and number |
|---|---|
| SharePoint Workflow Manager | October 13, 2026, update for SharePoint Workflow Manager (KB5002926) |