Unable To change Priority - access denied (virtualbox.exe)

[alllala]

Win 7 Host.
Installed virtualbox 4.2.30.

Now some processes of virtualbox.exe in the task manager of my host deny access if I try to change its priority.

What can I do?

Just out of curiosity: Since when does a running virtual machine have multiple process?

[mpack]

Just out of curiosity: Since when does a running virtual machine have multiple process?

Since forever. There is the VM itself, and there is the background service process (VBoxSVC) - of which there is only one, regardless of the number of client VMs.

Edit:  Oh, and don't forget the GUI/Manager, which will also appear in the task list - until you close it.

[alllala]

Just out of curiosity: Since when does a running virtual machine have multiple process?

Since forever. There is the VM itself, and there is the background service process (VBoxSVC) - of which there is only one, regardless of the number of client VMs.

But I have 4 virtualbox.exe processes for every virtual machine running. Where do the other 3 come from?

[mpack]

How many monitors are being defined per VM?

[alllala]

one

[mpack]

Then it's a mystery.

[socratis]

If I remember correctly, this changed at some point in the 4.3.x series, where from one process there were multiple ones. Can't seem to find the post, but it was definitely from a developer.

[alllala]

What about changing priority? Anyone can confirm this behavior? Or is it just me?

[socratis]

If you're interested in lowering the priority so it doesn't hog the CPU of the host, you can achieve that by reducing the Execution Cap (to something less than 100%) under System, Processor.