virtualbox.org

It was OK for days, but now I cannot start any machine from VirtualBox.
I reinstalled the VirtualBox but it couldn't solve the problem.

Anyone had same experience and resolved this issue? Thanks for your help in advance.


Failed to open a session for the virtual machine Win8.1.

The VM session was aborted.

Result Code: NS_ERROR_FAILURE (0x80004005)
Component: SessionMachine
Interface: ISession {7844aa05-b02e-4cdd-a04f-ade4a762e6b7}

Minimum information needed for assistance.

What changed on the system, applications installed etc.? Which version of VirtualBox?

After setting up a window machine (8.1; 32bit) successfully on the MBP13 retina (with El Capitan), nothing was changed after closing the VirtualBox (5.0.6). When reopened it and tried to start the window machine on the next day, the error message popped up like "Failed to open a session for the virtual machine" with the error code:

Failed to open a session for the virtual machine Win8.1_32bit Clone.

The VM session was aborted.

Result Code: NS_ERROR_FAILURE (0x80004005)
Component: SessionMachine
Interface: ISession {7844aa05-b02e-4cdd-a04f-ade4a762e6b7}

Really frustrating.. I also tried to export this virtual machine and import it into the VMware 7 fusion, but it didn't work...

First, you should know VB 5.0.6 and OSX 10.11 work together so that's not the problem. I have them both installed on three different Macs. However there are a number of third party programs that cause problems, especially Elmedia Player, Little Snitch and one I forget the name of. Also certain anti-viral programs, certain HP Printer drivers. Really any program that does not say it's El Capitan compatible can be an issue. If you have the first two installed you should uninstall them.

Other than that you will have to look on the Apple forums to see what other programs are problematic.