AUXSAYS Tactical knowledge for creators who want control
< Back to Microsoft
Windows 11 logo Windows 11 Microsoft

Patch intelligence record

Windows 11 26H2 (Build 26300.9711)

ProductWindows 11 Version26H2 Release dateOct 13, 2026
Evidence summary: Not enough reports 0 confirmed patch-specific community reports
AUXSAYS verdict INSUFFICIENT DATA

Too few reports for a verdict yet.

Community monitoring OFFICIAL SOURCE ONLY
Accepted reports
0
Latest evidence run
Not recorded
Healthy sources
0 fresh (success / no reports) · need 2

Monitoring reflects community-evidence collection health for this exact release — an absence of reports is not a safety guarantee, and this is separate from the AUXSAYS verdict.

Vendor Known Issues — 2 active vendor-known issues

2 active 3 resolved

Official vendor Release Health status. Not counted as community reports. Official source ↗

Official Patch Notes — vendor release notes captured from the official source

Windows 11 26H2 cumulative update, OS build 26300.9711 (KB5127648). Released 2026-10-13 on the General Availability Channel. Update type 2026-10 B. This is the official Microsoft Windows release-health entry (learn.microsoft.com/windows/release-health). Known-issue and safeguard-hold details are published on the per-version Windows release-health status page. Microsoft Release Health status (official) for Windows 11.

Windows 11 26H2 cumulative update, OS build 26300.9711 (KB5127648). Released 2026-10-13 on the General Availability Channel. Update type 2026-10 B. This is the official Microsoft Windows release-health entry (learn.microsoft.com/windows/release-health). Known-issue and safeguard-hold details are published on the per-version Windows release-health status page.

Microsoft Release Health status (official) for Windows 11 26H2: 2 active known issue(s), 3 resolved, 0 safeguard hold(s). Source: official Microsoft Windows release-health status page. This is vendor-published operational status, not user reports.

  • Resolved: Devices might experience a black screen or desktop loading issues after sign-in Microsoft has received reports of this issue occurring in some virtual desktop environments. — status Resolved KB5127648; originating N/A; last updated 2026-10-13 10:13 PT; resolved by KB5127648.
  • Active: Remote Desktop connections might fail for non-admin users with error 0xC000000D This issue affects non-admin users connecting through Remote Desktop with Administrator protection enabled. — status Mitigated; originating OS Build 26300.9550 KB5124010; last updated 2026-10-13 10:13 PT.
  • Resolved: Applications which require AC-3 audio decoding might close unexpectedly This issue is more likely to occur in legacy applications, and unlikely for many modern applications. — status Resolved KB5127648; originating OS Build 26300.9550 KB5124010; last updated 2026-10-13 10:13 PT; resolved by KB5127648.
  • Resolved: Domain-joined devices might lose their secure trust relationship with the domain Some Credential Guard protected machine accounts might be unable to sign in interactively will valid domain credentials. — status Resolved KB5124010; originating N/A; last updated 2026-10-08 17:44 PT; resolved by KB5124010.
  • Active: USB audio devices might fail to start or produce no sound Some USB Audio Class 1.0 devices display Code 10 or fail in multichannel audio modes after installing the Sept. 8 update — status Mitigated; originating N/A; last updated 2026-09-29 13:05 PT.
Technical Details
Released
Oct 13, 2026
File size
Not provided by source
Official source checked
Oct 14, 2026
Official notes checked
Oct 14, 2026
User Reports / Sources (0)

No user report sources have been counted for this record yet.

Official sources