id summary reporter owner description type status component version resolution keywords cc guest host 15171 Warning is logged on booting a Windows 10 guest Sworddragon "Like the log of this ticket ( https://www.virtualbox.org/ticket/15155 ) shows on booting a Windows 10 guest I'm always getting the warning ""Warning: /CPUM/CMPXCHG16B is deprecated, use /CPUM/IsaExts/CMPXCHG16B instead.""." defect closed other VirtualBox 5.0.14 wontfix Windows Linux