* GUI: fixed immediate crash during start on certain environments due to a library version conflict * GUI: when taking a snapshot from the VM selector, don't do a live snapshot * GUI: fixed the inclusion of additional information (license, vendor. * GUI: fixed error check when changing the VM controller settings (4.1.0 regression) * VMM: fixed handling of the sysenter/sysexit machine instructions in 64-bit guests on Intel hosts * VMM: fixed 64-bit guests on AMD Fusion CPUs # The following items were fixed and/or added:
Then give the below command to list the VM Machines.ĥ. To resolve the problem, follow the instructions below to remove the following line from the above locations:Ĥ. The error "Duplicate config values '/CPUM/CMPXCHG16B'.", occurs because the "CMPXCHG16B" CPU instruction is enabled on both the "VirtualBox.xml" file (C:\Users\Username\.VirtualBox\VirtualBox.xml), and on Virtual Machine's.
Interface: IConsole " How to FIX: Duplicate config values '/CPUM/CMPXCHG16B' and '/CPUM/IsaExts/CMPXCHG16B' in VirtualBox. ĭuplicate config values '/CPUM/CMPXCHG16B' and '/CPUM/IsaExts/CMPXCHG16B' – please remove the former! (VERR_DUPLICATE). " Failed to open a session for the virtual machine.
This tutorial contains instructions to resolve the VirtualBox Error 0x80004005, when you try to start a Windows 8.1 or a Windows 10 virtual machine:" Duplicate config values '/CPUM/CMPXCHG16B' and '/CPUM/IsaExts/CMPXCHG16B – please remove the former!'".Īfter updating Oracle VM VirtualBox to version 6.0 the following error may appear when trying to start a Windows 10 or 8.1 VM machine: