Overview
For security, please use the latest version of Windows and ensure all the latest software updates are installed.
To protect your data, backup regularly.
Links
Microsoft Windows
Which Windows operating system am I running? Using "About your PC" or winver, including OS Build.
Lifecycle FAQ - Windows
Windows release health including Windows 10/ 11 release information.
Download Windows Installation Assistant and Media Creation Tool, e.g. Disc Image (ISO File).
Update Windows
Windows Update: FAQ
Windows 10 update history Showing latest OS Builds & release history.
Windows 11 update history
Windows Support
Windows Blog
Stay protected with Windows Security
Wikipedia: Microsoft Windows
Wikipedia: Windows 10 version history
Wikipedia: Windows 11 version history
Wikipedia: Windows Update
Links
Backup