2021-01 Cumulative Update Preview for .NET Framework 3.5 and 4.8 for Windows 10 Version 1909 for x64 (KB4598301)

2021-01 Cumulative Update Preview for .NET Framework 3.5 and 4.8 for Windows 10 Version 1909 for x64 KB4598301...

2025-10 Cumulative Update Preview for Windows 11, version 25H2 for arm64-based Systems (KB5067036) (26200.7019)

2025-10 Cumulative Update Preview for Windows 11, version 25H2 for arm64-based Systems KB5067036 26200.7019...

2022-05 Cumulative Update Preview for .NET Framework 3.5 and 4.8 for Windows 10 Version 21H1 for x64 (KB5013887)

2022-05 Cumulative Update Preview for .NET Framework 3.5 and 4.8 for Windows 10 Version 21H1 for x64 KB5013887...

2021-09 Cumulative Update Preview for Windows 10 Version 1809 for ARM64-based Systems (KB5005625)

2021-09 Cumulative Update Preview for Windows 10 Version 1809 for ARM64-based Systems KB5005625...

Security Update for Windows Server Technical Preview (KB2993958)

Security Update for Windows Server Technical Preview KB2993958...

Security update 1970-01-01

...

PT-2008-6917 · Mozilla +1 · Firefox +11

Name of the Vulnerable Software and Affected Versions: Mozilla Firefox versions prior to 2.0.0.17 libxul0d-dbg affected versions not specified libxul-dev affected versions not specified libsmjs1 affected versions not specified libmozjs0d-dbg affected versions not specified libmozjs0d affected...

WSL Dev Channel Insiders

Early preview for the latest kernel updates...

Windows 11 UUP Preview

Windows 11 UUP Preview...

Check if client is in Release Preview ring

Evaluates to true if the RegKey value for RingId is 8...

Published for all IHVs and OEMs to help them limit their driver test on WU Live to specific test clients only

Evaluates to true if client machine is enabled for driver preview pool...

PowerShell Preview 7.2 and newer - x64

PowerShell Preview 7.2 and newer - x64...

PowerShell Preview - x64

Updates for PowerShell Preview x64...

Windows Next Dynamic Update for Store Setup

This DU update is targeted for Dynamic Update store upgrade scenario for Windows Tech Preview and higher...

Windows Next Dynamic Update for Web Setup

This DU update is targeted for Dynamic Update web setup Windows Next Tech Preview and higher...

Windows Server 2016 Technical Preview 4

Windows Server 2016 Technical Preview 4...

Windows Server Technical Preview Language Packs

Category for Windows Server Technical Preview Language Packs...

Servicing stack update for Windows 10 Insider Preview released to the Slow & Release Preview rings

None None...

Windows 10 Insider Preview Build 19041.264

None None...