virtualbox.org

Did you update your Windows host? Read the thread Windows 4.3.20 specifically for errors due to security from the post that I linked onwards. It seems that there is an update (KB3004394) that triggers a similar error to yours. See if it fixes it. Thank you @socratis! It does work. It seems now I ha...

This is really depressing! I am only a user. I read all the threads I can find, but haven't seen a solution. I uploaded the screen snaps, but not sure you can see it. It worked fine till yesterday. But today "Failed to open a session for the virtual machine Ubuntu32bit14.04.1." What's more...