KB5127936’s gradual-rollout notes document IPv6 CLAT on Wi-Fi and Ethernet for Windows 11 25H2/26H2 (builds 26200.9818 / 26300.9818): client-side 464XLAT so IPv4-only apps can reach IPv4 services from IPv6-only networks, PREF64 via RA with DNS ipv4only.arpa fallback, SLAAC required, and netsh/GPO enablement. Tech Commu
After the September 8, 2026 security update (KB5124008), some USB Audio Class 1.0 devices still show Device Manager Code 10 or no audio. Microsoft marks the issue Mitigated: OOB KB5129195 fixed 8-channel/3D modes only. The October 28 preview KB5127936 still lists this as a known issue with no full resolution — installi
KB5127936 (Windows 11 25H2/26H2 preview, builds 26300.9818 / 26200.9818) improves BitLocker pre-boot PIN retry handling so unintended repeated PIN submissions are less likely to trigger TPM dictionary-attack lockout and BitLocker recovery. Optional preview via Windows Update Advanced options; ask IT on managed PCs. Not
Microsoft Edge is the first browser to support Accelerated App Launch on Windows. With Edge 150+ and Windows 11 25H2/26H1/26H2 plus KB5127936 or later, most users get about 15% faster warm launches, and up to about 33% under heavy multitasking. The feature notifies an already-running Edge process directly instead of us
After September 2026 security updates, some Always On VPN profiles using automatic protocol selection could stay stuck on Connecting or show “The specified port is already in use.” Microsoft briefly marked the issue Resolved on Oct 13 then withdrew that claim. KB5127936 (Oct 28 preview for 25H2/26H2) lists the Always O
After the October 2026 security update KB5127648, some PCs could not turn Smart App Control back on (option grayed out). Microsoft fixed it for Windows 11 25H2 and 26H2 with KB5127936 (preview dated Oct 28; updates on/after Oct 27). 24H2 still uses the documented workaround path.
On Windows 11 24H2 and later, enterprise Windows settings backup and restore can show a restore summary of personalization settings and Store apps — about one hour after restore, for seven days.
The Document Foundation released LibreOffice 26.2.7 on November 3, 2026 — the last maintenance update of the 26.2 branch before end of life on November 30, with Windows presentation audio, DOCX and PDF hyperlink fixes.
Mozilla released Firefox 159.0.1 on November 3, 2026, fixing passkey sign-in across related sites, Windows crashes with some security software, and a High-impact layout CVE.