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• NTLM signing security improvements in Windows
• The November 2026 Windows security update is now available
• Windows 11, version 23H2 Enterprise and Education editions have reached end of updates
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Windows 11, version 26H2

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• Windows 11 release information
• How to get Windows 11, version 26H2

Windows 11, version 26H1

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• Windows 11 release information
• What to know about Windows 11, version 26H1

Windows 11, version 25H2

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Windows 10, version 22H2

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Windows Server 2025

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• Windows Server release information
• What's new in Windows Server 2025

Windows Server 2022

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• Windows Server release information
• What's new in Windows Server 2022

Additional versions

See details on known and resolved issues for other supported versions of Windows and Windows Server.

• Known issues: earlier versions

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