cannot launch new VM OS X 11.2.1

Discussions about using Mac OS X guests (on Apple hardware) in VirtualBox.

cannot launch new VM OS X 11.2.1

Postby ah1799 » 8. Mar 2021, 02:57

when starting a new VM, I click the folder icon and the Add+ button and the program crashes.

Failed to open a session for the virtual machine <vm name>.

The VM session was aborted.

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

Process: VirtualBoxVM [59668]
Path: /Applications/
Version: 6.1.18 (6.1.18)
Code Type: X86-64 (Native)
Parent Process: VBoxSVC [57412]
User ID: 501

Date/Time: 2021-03-07 14:56:29.546 -1000
OS Version: macOS 11.2.1 (20D75)
Report Version: 12
Bridge OS Version: 5.2 (18P4346)
Anonymous UUID: 5BB4D7D7-B567-4C23-B7E7-2025612F400E

Sleep/Wake UUID: 7C9BB78F-225B-4335-9DE2-E1FBC94F3FAE

Time Awake Since Boot: 45000 seconds
Time Since Wake: 16000 seconds

System Integrity Protection: enabled

Crashed Thread: 0 Dispatch queue:

Exception Codes: EXC_I386_GPFLT

Termination Signal: Segmentation fault: 11
Termination Reason: Namespace SIGNAL, Code 0xb
Terminating Process: exc handler [59668]
Posts: 1
Joined: 8. Mar 2021, 02:52

Re: cannot launch new VM OS X 11.2.1

Postby paulmc » 11. Mar 2021, 21:42

@ah1799, although there may be a variety of underlying causes, there's a fairly recent thread {over in the 'VirtualBox on Mac OS X Hosts' forum} that discusses a related issue, 'can't add startup disk on mac osx'; it mentions a couple of workarounds, which hopefully will be of some help.
Posts: 61
Joined: 28. Aug 2019, 18:43
Location: Earth (Guyana / USA / South Africa)
Primary OS: Mac OS X other
VBox Version: PUEL
Guest OSses: Mac OS X, Linux, Windows

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