Microsoft has released a series of emergency out-of-band updates after its September Patch Tuesday security release, which addressed roughly 1,000 vulnerabilities, broke Remote Desktop Services on Windows Server and caused other widespread problems. Administrators reported that updates KB5122871 and KB5122882 disrupted RDS, RDP connections, the Microsoft Management Console, File Explorer and Windows Update itself on affected systems.
The same patch cycle also introduced bugs affecting USB Audio Class 1.0 devices and folder-sharing between Hyper-V hosts and Linux virtual machines, according to Microsoft's own advisories and reporting from BleepingComputer. To contain the damage, Microsoft pushed emergency fixes KB5129236, KB5129195 and KB5129194 for Windows 10 and 11, along with KB5129238, KB5129237 and KB5129235 for Windows Server 2019 through 2025, released on September 14.
A fix for the USB audio issue was still pending as of this week, and IT administrators have been advised to test the emergency patches in staging environments before wide deployment, given how disruptive the original update proved to be for remote-access-dependent organizations.
Source: BleepingComputer
