7.1.12 -> 7.2.6a system_service_exception

[AKM]

hi,

tried to update to 7.2.6a from 7.1.12:

- uninstalled 7.1.12
- reboot
- installed 7.2.6
- reboot
- start VM

the whole laptop crashes hard with a "stop code SYSTEM_SERVICE_EXCEPTION (0x3B) What failed: VMMR0.r0" blackscreen and reboot.

the logs are mostly empty because everything crashes, not just the VM. but I have managed to get 1 with somestuff in it.
I tried repairing, uninstalling, rebooting, reinstalling several times, got it working 1 time after a reboot but on next reboot it hard crashed the laptop again so went back to 7.1.12 with no issue.

[AKM]

I have been spending several hours with this last weekend and at a certain points I really thought it simply worked but after the 4th reboot the whole laptop crashed again, so hard I even it needed to fix the main disk.

So as it is I am clueless what is going on exactly. the crash happens around the time the blue windows screen would normally appear on the client, so it starts, you see the windows circle loading thing and then full crash

These where the steps I did this weekend

- uninstalled 7.1.12
- rebooted
- checked services

Code: Select all

sc query type= driver | findstr /i vbox

showed VBoxNetAdp still running ? so did

Code: Select all

sc delete VBoxNetAdp

- then checked C:\windows\system32\drivers and there was still:
VBoxNetAdp6.sys 14/7/25
VBoxNetLwf.sys 14/7/25
VBoxSup.sys 14/7/25
VBoxUSB.sys 11/4/25
VBoxUSBMon.sys 14/7/25
- delete these 5 files and rebooted
- after reboot the 5 files where back
- googled and searched what I could to delete them for real but found no answer
- renamed the 5 files to .old
- then installed 7.2.6a as admin
- it created serveral newer version of those files (but not all)
VBoxNetAdp6.sys 30/1/26
VBoxNetLwf.sys 30/1/26
VBoxSup.sys 30/1/26
VBoxUSBMon.sys 30/1/26
- when install was done did not start virtualbox, but rebooted
- new files still there
- deleted the .old files
- installed extension pack and started the windows 11 VB with not issue
- rebooted the host 4 times, after the 4th time starting a VB it would crash the whole laptop

[Boxy]

Hmm...your VBox.log shows
00:00:05.457489 VD#0: DEK is missing
...
00:00:05.463110 Console: VM runtime error: fatal=false, errorID=DrvVD_DEKMISSING message="VD: The DEK for this disk is missing"
According to viewtopic.php?t=80794 , installing or re-installing the extension pack and/or the guest additions.

But your SYSTEM_SERVICE_EXCEPTION x03B leads to https://learn.microsoft.com/de-de/windo ... -exception "an exception happened while executing a routine that transitions from non-privileged code to privileged code." meaning trouble with a driver (or driver's hardware).

Maybe the missing or corrupted extension pack simply leads to corruption in the VBox...sys drivers as disk data is read but cannot be decrypted afterwards resulting in buffer overflows, wrong pointers a.s.o.)?

[AKM]

thank you for your reply

I removed the extension pack before the uninstall and then installed the new the new extension pack on the new install
however I just checked my logs on 7.1.12 which is currently running and it says the same
0:00:05.721650 Console: VM runtime error: fatal=false, errorID=DrvVD_DEKMISSING message="VD: The DEK for this disk is missing"

which is odd because the volume is encrypted so won't even boot without the extension pack.

I did a reinstall of both the guest and extensionpack on the 7.1.12 but the DEK error is still there.

so it might be the cause and maybe 7.1.12 is not as strict as 7.2.6 but that does not explain why I had 3 reboots of the host and the guest worked.

[Simple07]

I installed 7.2.6a yesterday. The way I do it, is I uninstall the current VirtualBox, then I delete the Oracle folder inside Program Files, then I delete the files starting with VBox* inside C:\Windows\System32\drivers. I then install the new VirtualBox release with the Extension Pack, then reboot.

However, this release refuses to install Windows 11 or boot it on 2 CPUs. 4CPUs, 6CPUs, even number of CPUs, but it works with 1CPU, 3CPUs, 5CPUs, odd number of CPUs. Also, all 7.2.7-xxxxxx releases.

[AKM]

hi,

thanks for the reply, what I did test today was the following

- 7.1.12 removed the disc encryption
- 7.1.12 uninstalled exactly has how Simple07 said
- 7.2.6 installed & expansion pack, rebooted
- all worked
- rebooted a total of 4 times and all worked still
- enabled disk encryption XTS256
- host crashed again (and DEC error in log file)
- set to uneven CPU
- client booted
- next run host crashed again
- set disk encryption to XTS128
- host crashed again (and DEC error in log file)
- disabled disc encryption
- host crahed
- next run client booted
- next host crashed again

I tested starting the VB af fast as I could after reboot and wait 5 min, makes no diffrence in the overal
its just so random where it feels like encryption makes it happen more but overal it happens with or without.
the DEC message seems to be standard, even after a new clean disk encryption

back to 7.1.12 again.

Regards,