Winsage
January 19, 2026
Microsoft released an out-of-band update for Windows 11, designated as KB5077797, on January 17 for version 23H2 to address a critical malfunction that prevented some systems from shutting down, restarting, or hibernating after the January Patch Tuesday update. This issue primarily affected systems with System Guard Secure Launch enabled by default. The update also resolves a separate authentication problem with Remote Desktop that caused credential prompts to fail or loop indefinitely. Additionally, Microsoft acknowledged a bug affecting classic Outlook POP account profiles, which has not yet been fixed. Users are urged to install KB5077797 to resolve these issues.