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Microsoft patch classifications

When creating a rule, you select a classification for the Microsoft patches. Third party patches do not use these categories.

When selecting classifications to approve be aware of the patching requirements of your customers. For example if a customer must remain on a specific version of Internet Explorer, do not select Updates, Update Rollups, or Feature Packs as IE could be part of any of those packages.

The classifications are identified as:

Critical Updates A fix for a specific problem addressing a critical, but non-security-related bug.
Definition updates Software update containing additions to a product’s definition database.
Drivers Software controlling the input and output of a device.
Feature packs New functionality distributed outside the context of a product release, which is usually included in the next full release.
Security updates A fix for a product-specific, security-related vulnerability.
Service packs A cumulative set of hotfixes, security updates, critical updates, updates, and additional fixes. Service packs may also contain customer-requested design changes or features.
Tools A utility or feature for completing a task or set of tasks.
Updates A fix for a specific noncritical, non-security-related problem.
Update rollups A cumulative set of hotfixes, security updates, critical updates, and updates packaged together for easy deployment, generally targeting a specific area.