Windows Update and Microsoft Update

  • Security Updates are generally categorized as Important and will be downloaded and installed automatically.

Microsoft Update Catalog

Windows Server Update Services (WSUS)

Installation Logic: ​With automatic update technologies, detection and installation logic automatically manages the installation order of security updates. If you manually install security updates, please make sure to check the Security Update Guide and Knowledge Base article before installing.

Patch compliance: Windows Update Agent (WUA) can be used to scan computers for security updates without connecting to Windows Update or to a Windows Server Update Services (WSUS) server, which enables computers that are not connected to the Internet to be scanned for security updates. For more info, see “Using WUA to Scan for Updates Offline”

File size of security update: File size of each security update package is documented on the Windows Update catalog site.

Servicing Models of Windows: Windows uses a rollup model to bring a more consistent and simplified servicing experience. Learn more about the servicing model of Windows at:

Source: Microsoft

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