[Bug]:All Virtual Machine Crash on trying to Starts

[rexmorgan99]

Version

7.2.2

Host OS Type

Windows

Host OS name + version

Windows 10 Version 22H2

Host Architecture

x86

Guest OS Type

Linux

Guest Architecture

x86

Guest OS name + version

LinuxMint 21.3

Component

Other

What happened?

I have several virtual machines that I use regularly. I cannot no longer get any of them to function.

log_file_10302025-713pm.txt

How can we reproduce this?

Use Windows 10 Build, start VirtualBox Manager, click 'Start' on a virtual machine.

Did you upload all of your necessary log files, screenshots, etc.?

• Yes, I've uploaded all pertinent files to this issue.

[paulsonx]

The VBox.log shows that your host system has only 12.4GB of available
memory while you are attempting to start a VM which has been assigned
24GB of memory:

00:00:37.900556 Host RAM: 147439MB (143.9GB) total, 12781MB (12.4GB) available

00:00:38.260698   RamSize           <integer> = 0x00000005dc800000 (25 174 212 608, 23.4 GiB)

The VBox.log also shows:

00:00:37.902804 Oracle VM VirtualBox Extension Pack (Version: 7.0.18 r162988; VRDE Module: VBoxVRDP; Crypto Module: VBoxPuelCrypto unusable because of 'VBoxExtPackVMRegister returned VERR_VERSION_MISMATCH, pReg=0000000000000000 ErrInfo='VirtualBox version mismatch - expected 7.0 got 7.2'')

that you need to upgrade the VirtualBox Extension Pack to be the same version of
VirtualBox - i.e. 7.2.2.

[rexmorgan99]

Thanks for the reply paulsonx. I have uninstalled VirtualBox 7.2.4 and the installed it again. I also removed the Extension Pack and reinstalled. I am including the latest log file. I appreciate any further help. Thanks again!

VBox.log

[AlexanderEichner]

You could try turning Hyper-V off to make VirtualBox use its own hypervisor.