Windows 11 and 10 get emergency patches, but AMD GPU issues remain

Microsoft’s September Patch Tuesday fixed a record 700+ security vulnerabilities across Windows versions, but it also caused some issues—most notably the breaking of USB audio on Windows 11. Now a week later, the company has released emergency out-of-band updates for both Windows 11 and Windows 10 to address some of those issues.

Windows 11’s KB5129195 update

Update KB5129195 resolves some (but not all) of the issues affecting the Windows 11 audio system, plus further issues relating to Claude Cowork and Remote Desktop Services (RDS).

Some PCs with AMD Radeon GPUs are also facing issues, but this update doesn’t address that yet—nor does it address issues with File Explorer and File History that were also introduced on Patch Tuesday.

Microsoft is automatically rolling out the emergency KB5129195 update to all Windows 11 PCs as a mandatory, cumulative, out-of-band update. It contains fixes from previous updates, and it also addresses a newly discovered elevation of privilege (EoP) security flaw. Installation should take about 10 minutes depending on hardware and requires a restart.

Windows 10’s KB5129236 update

For Windows 10 versions 22H2 and 21H2, Microsoft has released a separate emergency update called KB5129236. According to the changelog, the update resolves the following issues:

[Remote Desktop Services (known issue)] Fixed: This update addresses an issue affecting Remote Desktop Services (RDS) after installing the September 2026 Windows security update (KB5122878). In affected environments, RDS might become unstable, causing RDP connection and sign-in failures or servers to become unresponsive during Remote Desktop configuration. Related tools, including Microsoft Management Console (MMC), RDS Licensing Diagnoser, File Explorer, and the Windows Update page, might also stop responding.

[Hyper-V (known issue)] Fixed: Some applications that use HCS-managed virtual machines experienced issues when sharing host folder with Linux VMs using Plan9. Folders shared from the Windows host using Plan9 did not appear or could not be accessed in the guest environment.

[8-channel or 3D audio modes] Fixed: Some USB Audio Class 1.0 devices functioning as expected in standard stereo configurations failed when using multichannel audio features, including 8-channel or 3D audio modes. (Note: There are other audio symptoms not resolved in this OOB update. See the “Known issues in this update” section for more information.)