This week, Microsoft provided a crucial update to address significant issues affecting Remote Desktop Services (RDS), Hyper-V, and other software products. The problems emerged following the company's Patch Tuesday updates on September 8, which included fixes for 974 Common Vulnerabilities and Exposures (CVEs). On September 11, Microsoft acknowledged that users were experiencing difficulties with several of its products.

The issues included instability in RDS, causing Remote Desktop Protocol (RDP) connections to fail after a few minutes, sign-in troubles, and servers stalling at the 'Please wait for the Remote Desktop Configuration' screen. Related tools like the Microsoft Management Console, RDS Licensing Diagnoser, and File Explorer also became unresponsive. Additionally, users faced problems with the Windows Update page, which would freeze with a perpetual loading indicator.

To resolve these problems, Microsoft released an update on September 14, labeled KB5129195. This update addressed the RDS issues and also fixed problems affecting Hyper-V users, particularly those running applications like Claude Cowork and the Windows Subsystem for Linux. The technical glitch involved shared folders from the Windows host not appearing or being inaccessible in the guest environment, which affected applications relying on these shares.

Furthermore, the patch resolved an issue with USB Audio Class 1.0 devices that had been failing to start or producing audio since the earlier update. In total, this marks the sixth emergency patch Microsoft has issued to tackle the failures that arose from September's Patch Tuesday updates. For IT administrators who deployed temporary mitigations via Group Policy, no additional steps are needed before applying this out-of-band update.