In January 2026, Microsoft unveiled its inaugural "Patch Tuesday" update for both Windows 11 and Windows 10 systems. This update encompassed KB5074109, KB5073455, and KB5073724. Notably, the KB5074109 update brought about a series of issues. Some users encountered remote desktop connection failures. Moreover, problems plagued the classic Outlook desktop client when utilizing the POP protocol. These issues manifested as freezing, an inability to exit the program, and difficulties during restarts. Additionally, the update led to abnormal shutdown and hibernation behaviors in the systems.

Following user reports, Microsoft promptly acknowledged these problems. On January 18, 2026, the tech giant issued an emergency update. This update specifically targeted and resolved the abnormal shutdown and remote desktop connection failures, aiming to restore smooth and stable operation for Windows users.