Windows Update and Microsoft Update
- Security Updates are generally categorized as Important and will be downloaded and installed automatically.
Microsoft Update Catalog
- To get the standalone package for security update, go to the Microsoft Update Catalog website.
Windows Server Update Services (WSUS)
- This update will automatically synchronize with WSUS if you configure Products and Classifications (Security Updates).
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:
- Windows 10 update servicing cadence
- Simplifying updates for Windows 7 and 8.1
- Further simplifying servicing models for Windows 7 and Windows 8.1
- More on Windows 7 and Windows 8.1 servicing changes
- .NET Framework Monthly Rollups Explained
- Simplified servicing for Windows 7 and Windows 8.1: the latest improvements
- Windows Server 2008 SP2 servicing changes
- Windows 7 servicing stack updates: managing change and appreciating cumulative updates
Source: Microsoft