Error on Linux: Failed to open virtual machine; NS_ERROR_INVALID_ARG (0X80070057)

[fth0]

I'd suggest to concentrate on a single repeatable occurrence of the problem. I'll give you one example from what I understood so far:

1. On the Antix host, the Wine0 VM was registered in the VirtualBox Manager and located in /media/<user>/NeonH/<user>/VirtualBox VMs/Wine0/Wine0.vbox, with sda7 mounted on /media/<user>/NeonH. The Wine0 VM had an ISO file in its virtual DVD drive, for example /media/<user>/NeonH/<user>/tmp/install/MX-23.1_x64/MX-23.1_x64.iso. Side question: The tmp folder isn't a mount point, is it?

2. On the Debian host, the Linux VM was registered in the VirtualBox Manager and located in /media/<user>/NeonH/<user>/VirtualBox VMs/Linux/Linux.vbox, with sda7 mounted on /media/<user>/NeonH. In the VirtualBox Manager, when trying to add the Wine0 VM, which is located in /media/<user>/NeonH/<user>/VirtualBox VMs/Wine0/Wine0.vbox, you got the error message you reported.

3. Please reproduce steps 1 and 2, verify that /media/<user>/NeonH/<user>/VirtualBox VMs/Wine0/Wine0.vbox and /media/<user>/NeonH/<user>/tmp/install/MX-23.1_x64/MX-23.1_x64.iso are both accessible from within a terminal, close the VirtualBox Manager, wait for at least 5 seconds, copy the VirtualBox.xml and the Wine0.vbox files from within the Debian host, and provide a zip file with them.

4. I noticed that you used a folder with Cyrillic characters (видео for video). Just in case that this plays a role here: Reboot the Debian host, move or rename the VirtualBox.xml file, start the VirtualBox Manager, try to add the Wine0 VM, close the VirtualBox Manager, wait for at least 5 seconds and replace the VirtualBox.xml file with the original.

PS: In principle, you're free to choose another VM for step 3. Just don't deviate from the procedure and provide the corresponding information then.

PPS: If you're proficient with strace, you could run the VirtualBox Manager under strace to capture all filesystem accesses (e.g. use strace -tt -ff -o strace.log VirtualBox inside an empty folder).

[kamn]

I think that I resolved the problem, at least for what I needed. I concluded that a VM is less accessible to other hosts if it is created with an .iso file in its CD drive...

Thank you
I've just edited .vbox file, deleted line with vbox addons iso under <DVDimages>
everything works