Fail starting VM after upgrading Host OS

[satimis]

Hi all,

Host - Ubuntu 16.04 desktop
VM - Ubuntu 16.04 desktop
Oracle VirtualBox

Recently I have upgraded Ubuntu 16.04 (Host) by changing to another repo (Download from: Server for Hong Kong). Please see following posting:-

https://ubuntuforums.org/showthread.php ... 382&page=3
# post 27

After upgrade I'm unable to start VM

Warning:

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Failed to open a session for the virtual machine ub1604dkpc1_00.

The device helper structure version has changed.

If you have upgraded VirtualBox recently, please make sure you have terminated all VMs and upgraded any extension packs. If this error persists, try re-installing VirtualBox. (VERR_PDM_DEVHLPR3_VERSION_MISMATCH).

Result Code: NS_ERROR_FAILURE (0x80004005)
Component: ConsoleWrap
Interface: IConsole {872da645-4a9b-1727-bee2-5585105b9eed}

⟫ vboxmanage --version

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5.0.40_Ubuntur115130

Virtual-Manager
-> Preferences -> Extensions
Extension Packages

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(check) Oracle VM VirtualBox Extension Pack  5.0.14r105127
(check) VNC  5.0.40r115130

Please advise how to fix the problem. Thanks

Regards
satimis

[socratis]

5.0.40_Ubuntur115130

It looks like you're using the distro's fork version of VirtualBox. You can either ask in their forums for help, or completely remove/uninstall/delete/purge their version and install the official version from the Downloads section of VirtualBox (https://www.virtualbox.org/wiki/Downloads).

Plus, the Extension Pack (ExtPack) that get installed on the host has to match the VirtualBox version.