Sample error popup shown below.įrom this, I figured that some critical file didn't get deleted by the uninstall, or rewritten during the install. When I installed VBox 6.1.0, I got the same message. When I uninstalled VBox 6.1.0 and re-installed VBox 6.1.4, I got the same message. When I tried to run either an existing virtual machine or a new virtual machine, I got an error popup: 'Failed to open a session for the virtual machine. Using the standard Windows 10 'Add or Remove' programs tool, I removed VBox 6.1.4 and installed 6.1.0. I'm trying to uninstall VirtualBox and install another version. VirtualBox version: 6.1 (various) and 6.0 (various) who could ask for anything better.Error message when trying to start a VM vbox_fail2.png (55.04 KiB) Viewed 13346 timesHost OS: Windows 10 Pro, version 1909 (_, os build 18363.778 I was just playing with Windows 98 SE to see if it was stable in a virtual machine. And the Windows 98 SE would not load (crashed with error at the VirtualBox Console). VirtualBox was loaded into the OS, started normally, but when the previous Virtual Machine (Win 98 SE) was added back to the VirtualBox menu, the VM drive was not recognized.

Had to go to console and remove, then went to Software Boutique and installed from there. Once it was all done, VirtualBox was not loaded in the menus or the desktop.

(Took a long time to compile, but threw no errors) It ran with all kinds of dep mods for dkms and when it installed the new update, it loaded a virtualbox dkms that seemed to replace the standard Mate offering. When I ran an apt upgrade tonight, I was offered the new update for VirtualBox (6-1-26). Just a quick message (I did not save error logs and deleted the Virtual Machine).

Ubuntu how to uninstall virtualbox