virtualbox.org

When i openmy GNS3 and try to connect virtual box machines, it comes with an error saying

"VirtualBox has returned an error: VBoxManage.exe: error: Could not find a registered machine named 'centos67_32 '
VBoxManage.exe: error: Details: code VBOX_E_OBJECT_NOT_FOUND (0x80bb0001), component VirtualBoxWrap, interface IVirtualBox, callee IUnknown
VBoxManage.exe: error: Context: "FindMachine(Bstr(a->argv[0]).raw(), machine.asOutParam())" at line 737 of file VBoxManageMisc.cpp"

can anyone help me solving this problem ?

Unless you can explain a little better what exactly you're trying to do and how, I'm afraid no, because the VirtualBox message is pretty clear. It can't find, it doesn't know, it hasn't registered the VM that you're telling it to:

exojjang wrote: Could not find a registered machine named 'centos67_32 '

so this is what im trying to do:

i opened GNS3 program and tried to call VB machines but it says they can't find my VM 'centos' but on Virual Box i do have that machine, my question is why is my VBox manager not finding my machine ?? when i play the machine by VirtualBox, it works perfectly fine.

exojjang wrote:when i play the machine by VirtualBox, it works perfectly fine.

Then I'm afraid this is a problem with GNS3, since VirtualBox is working. Most probably some configuration in your GNS3.