Failed to create the VirtualBox object!

[Olleg]

Version 6.0.10 r132072 (Qt5.6.3)

I created a test bed on VirtualBox of HA cluster. And I simulate hardware failures in loop. And with very rare probability (I got it on 424 iteration) I get VirtualBox error.

+ VBoxManage snapshot tuchanka0a restore install
VBoxManage: error: Failed to create the VirtualBox object!
VBoxManage: error: Code NS_ERROR_FACTORY_NOT_REGISTERED (0x80040154) - Class not registered (extended info not available)
VBoxManage: error: Most likely, the VirtualBox COM server is not running or failed to start.

[Socratis]

1. It's usually better and faster, if issues get first addressed in the ​VirtualBox forums, a lot more eyes there. More than 95% of the issues are resolved in the forums, which keeps the developers focusing on the bug fixes and enhancements, and there is no need for another ticket to keep track of. For example, yours is most probably not a bug and someone from the developers has to deal with it and close it as "Invalid".

Plus a discussion and analysis on the bug tracker is going to help me, you, and potentially a future drive-by user or two. Not so in the forums, many more tend to benefit...

So, open if you can a new thread in the ​VirtualBox on Mac OS X Hosts section of the forums. Be sure to mention that you came from the bug tracker and include the ticket number.

2. You were supposed to follow these steps when you filed the bug, and provide a VBox.log:

   Attach a (full) log file ("Machine" menu/"Show Log" in the main VirtualBox Manager window) straight away to save time for you and for us. The log file contains a lot of useful information about both the host and the guest systems as well as information about what happened during a particular machine run. Please do not cut and paste it.

[Olleg]

VBoxSVC.log

[Olleg]

The log is attached. There is not selectorwindow.log, may be, because I didn't start GUI. And there is not VM log, may be, because VMs didn't start. (I deleted the old logs before the test).

The forum topic is: ​https://forums.virtualbox.org/viewtopic.php?f=8&t=94503

As I can undestand the bug is arisen in command:

VBoxManage snapshot "$host" restore "$snapshot"