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Microsoft Security Updates

Upcoming Release

  • Microsoft security updates are released on the second Tuesday of each month.

Latest Release

Get the Updates from Microsoft Update

To get help protecting your home computer, please visit the Security Center for Home Users, or download the updates from Microsoft Update.

Download Detailed Security Update Information

Download an Excel file containing detailed information, such as affected components, bulletin replacements, reboot requirements, and related Common Vulnerabilities and Exposures (CVEs). Download Microsoft Security Bulletin Data
Additionally, bulletin information in the Common Vulnerability Reporting Framework (CVRF) format is available through the Microsoft Security Update API (login required).

Search Bulletin Archives

Bulletins released before April 2017 will be archived. To search the archives, use the tool below.