A recent Windows 11 security update triggered unexpected shutdown failures and prevented some Remote Desktop sessions from authenticating. Users reported that the system would stall during power-off, while remote connections intermittently refused login attempts, prompting concerns across both home and enterprise environments. Microsoft responded quickly, delivering out-of-band patches through Windows Update to restore normal functionality. The two fixes, identified by their KB codes, target the underlying driver and authentication modules that were affected by the update. Administrators are advised to apply the patches without delay and to monitor system behavior after installation. While the incident underscores the challenges of delivering large-scale updates, the rapid rollout of corrective code demonstrates the company's commitment to maintaining a stable and secure platform.