This happens after updating into the MacOS Bug sur. And then trying to start the VirtualBox VMs,
Tried so far and no luck with below options,

1. Un-installed and re-installed the VirtualBox
2. Created completely new VM and tried
3. Re-installed `Oracle_VM_VirtualBox_Extension_Pack-6.1.16`

Anyone else came a cross with the same issue? any clue to resolve this would really appreciated.

This the the complete Error message

```

Failed to open a session for the virtual machine New Ubuntu.

The virtual machine 'New Ubuntu' has terminated unexpectedly during startup with exit code 1 (0x1).

Result Code: NS_ERROR_FAILURE (0x80004005)
Component: MachineWrap

```

[![Screenshot](https://i.stack.imgur.com/1Xe09.jpg)](https://i.stack.imgur.com/1Xe09.jpg)