Microsoft Issues Out-of-Band Windows Update After September Patch Breaks Remote Desktop, Hyper-V

Microsoft released an out-of-band Windows update (Sept. 14) to fix issues caused by its Sept. 8 security patch that disrupted Remote Desktop Services (preventing new sessions and sign-ins), broke Plan9 host-folder sharing for some Hyper-V-managed Linux VMs including WSL, and caused multichannel failures for USB Audio Class 1.0 devices; the advisory lists KB identifiers and rollout details for affected Windows versions and urges IT teams to install the update and test RDP, shared folders, and critical audio hardware.