virtualbox.org

I was happy to see the changelog of 6.1.14 say it was again compatible with my 5.8 kernel, but after the upgrade, starting the win10 guest aborts with

Failed to open a session for the virtual machine Win10.

The VM session was aborted.

Result Code: NS_ERROR_FAILURE (0x80004005)
Component: SessionMachine
Interface: ISession {c0447716-ff5a-4795-b57a-ecd5fffa18a4}

I was hoping to see my beloved win10 desktop again instead?
I'm running a self-compiled vanilla kernel (5.8.6). Am I missing some necessary configuration switch for virtualbox 6.1.14 to work with 5.8?

Log file attached

Installing Extensionpack 6.1.14 fixed the problem!

Great! Glad you're up and running.

fwiw Extension Pack version always has to match the Virtualbox version.