Microsoft has pushed out an emergency, out-of-band Windows 11 update following the September Patch Tuesday release, which has caused stability issues across enterprise and consumer machines This article explores rds september update. . The rushed fix, KB5129195, arrives just over a week after one of the largest security rollups the company has ever shipped, highlighting how quickly a massive patch can turn into an operational headache for administrators worldwide.
The out-of-band update targets Windows 11 versions 24H2 and 25H2, advancing them to OS builds 26100.9457 and 26200.9457, respectively, and it lands as a mandatory cumulative package that installs automatically through Windows Update.
The most severe fallout was Remote Desktop Services (RDS), where after the September update, RDP connections failed after several minutes, sign-in errors, and servers hung indefinitely at the "Please wait for the Remote Desktop Configuration" screen. Hyper-V and Virtual Machine Breakage A second serious bug hit virtualization workflows. Applications that use HCS-managed virtual machines lost the ability to share host folders with Linux guests via the Plan9 protocol, resulting in shared directories either failing to appear or being unable to be mounted inside the guest environment.
Additionally, USB Audio Class 1.0 devices that failed to start or produced no sound, such as "This device cannot start (Code 10)" errors in Device Manager, unresponsive volume controls, and dead sound settings, were affected.
