Microsoft Windows 11 Update KB5043145 Causes Major System Issues

Overview

• The KB5043145 update for Windows 11, released in late September 2024, has caused significant problems for users, including multiple reboots and system freezes.
• Affected devices may enter a reboot loop, display blue or green screens of death, or trigger the Windows Automatic Repair tool and BitLocker recovery.
• Microsoft has paused the rollout of the update and issued a Known Issue Rollback (KIR) to mitigate the problems on impacted systems.
• The issues extend to USB and Bluetooth device failures, as well as disruptions to keyboard, mouse, Wi-Fi, and Windows Subsystem for Linux 2 functionality.
• Microsoft is investigating the root cause and advises users to uninstall the update or use the KIR workaround until a permanent fix is available.