Windows 11 KB5124006 release preview build lands with long shell improvement feature list

Live updates

1. 31d ago

   Windows 11 Release Preview Build KB5124006 Lands With Shell Updates

   Microsoft has released Windows 11 KB5124006 to the release preview program, combining system shell interface improvements with a massive security patch cycle that addresses a record volume of vulnerabilities. Extremetech reports that the update fixes 974 security flaws, while Krebs on Security states that nearly 1,000 security holes were plugged. Preview program participants receive these security updates alongside various adjustments to the system shell. Additional documentation and deployment support are available through official Microsoft support channels and the Windows Blog for users seeking installation details.

   Why it matters

   Microsoft Windows is a proprietary operating system developed in families catering to personal computers, servers, and embedded systems, with editions spanning home users to enterprise corporations. The platform relies on regular updates and patches delivered through deployment channels to maintain security and operating system stability across global hardware configurations.

   What is confirmed

   • Microsoft has deployed the Windows 11 KB5124006 release preview build.
   • Extremetech reports that the update fixes 974 security flaws.
   • Krebs on Security states that nearly 1,000 security holes were plugged.

   What to watch next

   • Official general availability release date for Windows 11 KB5124006 to non-preview users
   • Final vulnerability count verification upon broader public rollout
   Sources used for this update (9)

   1. blogs.windows.com — Home | Windows Blog
   2. support.microsoft.com — Windows help and learning | Microsoft Support
   3. www.microsoft.com — Experience the Windows difference with Windows 11 OS, Laptops,...
   4. support.microsoft.com — Create installation media for Windows | Microsoft Support
   5. en.wikipedia.org — Microsoft Windows - Wikipedia
   6. apps.microsoft.com — Windows App - Free download and install on Windows | Microsoft...
   7. apps.microsoft.com — Microsoft Store - Download apps, games & more for your Windows PC
   8. techcommunity.microsoft.com — Windows | Microsoft Community Hub
   9. blogs.windows.com — How to get the Windows 11 2026 Update
   confidence 100%
2. 42d ago

   Microsoft releases Windows 11 KB5124006 preview build with extensive security patches

   Microsoft has deployed the Windows 11 KB5124006 release preview build, which combines a series of shell interface improvements with a massive security update. This patch cycle addresses a record volume of vulnerabilities. Extremetech reports that the update fixes 974 security flaws, while Krebs on Security states that nearly 1,000 security holes were plugged. Users in the preview program receive these security fixes alongside various adjustments to the system shell.

   Why it matters

   The scale of this update is unusual compared to standard monthly cycles. Ars Technica described the patch release as massive, highlighting the high volume of vulnerabilities addressed simultaneously.

   Still unconfirmed

   • Extremetech reports the update patches 974 security flaws.
   • Krebs on Security reports Microsoft plugged nearly 1,000 security holes.

   What to watch next

   • Confirmation of the exact number of security vulnerabilities patched.
   • User feedback on the stability of the shell improvements in the preview build.
   Sources used for this update (2)

   1. gamerant.com — Build Base to Survive VERITY Codes (September 2026)
   2. www.howtogeek.com — Windows 11's low-latency mode is late to the party—here's how it compares to NVIDIA Reflex
   confidence 70%
3. 47d ago

   Windows 11 Release Preview Build KB5124006 Arrives With Shell Updates

   Microsoft issued the Windows 11 KB5124006 release preview build, featuring a long list of shell improvements. Concurrently, the company rolled out its monthly patch release, which Extremetech and Krebs on Security report as the biggest update ever by plugging a record number of security flaws. Extremetech specifies that the update patches 974 security flaws, while Krebs on Security reports that Microsoft plugged nearly 1,000 security holes. Ars Technica also noted the massive scale of this month's patch release. Users testing the preview build gain access to numerous interface adjustments alongside the heavy wave of security fixes.

   Why it matters

   Monthly security updates are standard procedure for Microsoft, but the scale of the latest patch release marks an unprecedented volume of fixes. At the same time, Microsoft continues to refine the Windows 11 user experience through preview builds that target long-standing shell behaviors. These simultaneous updates affect both core operating system security and day-to-day user interactions across millions of devices.

   What is confirmed

   • Microsoft released Windows 11 KB5124006 to the release preview build with a long list of shell improvements.
   • Microsoft patched a record 974 security flaws in what is described as its biggest update ever.

   What to watch next

   • Monitoring user feedback on the stability of Windows 11 KB5124006 shell improvements.
   • Tracking the general rollout of the record-breaking security patch to all Windows 11 users.
   Sources used for this update (6)

   1. arstechnica.com — Why this month’s Microsoft patch release is a doozy
   2. Krebs on Security — Microsoft Plugs Nearly 1,000 Security Holes
   3. extremetech.com — Microsoft Patches a Record 974 Security Flaws in Biggest Update Ever
   4. PCWorld — 5 years later, I can finally use Windows 11 the way I want
   5. Neowin — Windows 11 KB5124006 release preview build lands with long shell improvement feature list
   6. www.enr.com — ENR 2026 Top 400 Contractors
   confidence 100%