I always have the strange ones -- LOL Running VBox 7.0.20 on a Mint 22 host machine. The host works flawlessly. So; now VBox only allows me to store ONE linux VM and certainly cannot mount two machines at the same time. It flags an authentication error every time. The 4 VM's are running 21.3, and windows 10 Pro. These machines perform flawlessly as well when I mount them. Error: Callee RC: NS_ERROR_INVALID_ARG (0X80070057) How do I mount them? I wrote a simple batch script to cd to Home - .config - VirtualBox and once in the directory to rm all the contents. Then I can mount VBox and select any of the machines, and again they run great. I did not have this issue when I was running 24.04, which is using the same kernel. I did uninstall and re-install VB a couple of times, and in fact I dropped all the way back to VB 6.0x to check that too. Same result so I am almost sure its not VBox but Mint 22 somehow. Strangely I don't see any similar posts on numerous forums. Hmmmmmm?
I haven't gone there yet. I tried to go there yesterday but their firewall was blocking my "circuit". I will get creative today and find a way in. Thanks for the comment and helpfulness. I really do love Mint lately. Ran pure Debian for many years and I just like how Mint Cinnamon feels right out of the box. My family users love it on their machines too.
My normal VM storage location for the machines is on a separate LUKS volume on the same NVME. My VM's are not stored on the system disk so I don't have to back them up conventionally. I keep them backed up using snapshots and spin out clones in many places. However; I created a few clones on the system disk just to check out whether or not re-locating the VM's would resolve my situation. It did NOT! Today I took the latest kernel update on Mint 22 and was hopeful that might fix it, again NOPE! Sorry - fblais but I haven't ventured over to those forums yet!
fblais, I just put this post and topic up in the mint forums for VirtualMachines. Busy today but I can circle back hopefully later today. Thanks for the tip.
I just wanted to come back to this thread and let you know the situation resolved itself. Mint 22 has had a few updates and VBox is now at 7.1.4x so between these its running smoothly.