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Security update bulletins

When necessary, Microsoft releases security updates on the second Tuesday of each month. We publish security bulletins to announce and describe the update. Occasionally security updates are released more often.

Security update bulletins have two forms: simplified and technical. The links below go to the simplified versions. To get technical details review the information published on Microsoft TechNet.

Latest security update bulletin

Latest security bulletins by product or service


Archived security update bulletins

For previous technical security update bulletins, see TechNet Microsoft Security Bulletin Search.


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