Microsoft Windows 11 25H2 Update Version OS Build 26200.9725
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Update Summary
KB5134133 is a non-security out-of-band update for Windows 11 25H2 that adds an updated trusted root certificate payload for devices unable to receive automatic certificate trust list updates.
Update Details
Security
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New Features
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Known Issues
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Hints
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Product Information
Vendor: Microsoft
Product: Windows 11
Product type: Software
Application category: Utilities
Platform: Windows
Variant: 25H2
Version: OS Build 26200.9725
Vendor information published: Oct 26, 2026
Original release notes: View on vendor site
Published on updatealert.io: Oct 28, 2026
Description: Client operating system for modern desktop and enterprise environments.