[SOLVED] Invalid entry in the device registration structure. (VERR_PDM_INVALID_DEVICE_REGISTRATION).

[RaoulTeeuwen]

I had a Win10 VM running on VB 6.1 on Kubuntu 20.04. No problem running it. Since i did not have access to the laptop camera within the VM, i installed the guest pack extension (Oracle_VM_VirtualBox_Extension_Pack-6.1.0_RC1.vbox-extpack, 21-Nov-2019 19:51) > now when i start the WIn10 VM i get "Invalid entry in the device registration structure. (VERR_PDM_INVALID_DEVICE_REGISTRATION).

Result Code:
NS_ERROR_FAILURE (0x80004005)
Component:
ConsoleWrap
Interface:
IConsole {872da645-4a9b-1727-bee2-5585105b9eed}
"
and the Win10 VM does not start/is not usable.

The log file (attached) contains (not sure whether this is the key line in te log related to the problem i experience) this line:

"VMSetError: /build/virtualbox-X5m07m/virtualbox-6.1.6-dfsg/src/VBox/VMM/VMMR3/VM.cpp(314) int VMR3Create(uint32_t, PCVMM2USERMETHODS, PFNVMATERROR, void*, PFNCFGMCONSTRUCTOR, void*, VM**, UVM**); rc=VERR_PDM_INVALID_DEVICE_REGISTRATION"

I saw resemblance to this ticket viewtopic.php?f=7&t=98608&p=478510#p478510 , but someone else thought otherwise, hence this post. I could not find a solution while searching the internet, so while trying to solve it, i share it to see whether anybody here has any idea, and for others with the same problem.

[mpack]

00:00:03.533545 VirtualBox VM 6.1.6_Ubuntu r137129 linux.amd64 (Apr 15 2020 15:48:44) release log

Forks are not supported here. Install the official version and we'll see if you still have a problem.

Also freebie tip....

00:00:03.538460 Oracle VM VirtualBox Extension Pack (Version: 6.1.0_RC1 r134891; VRDE Module: VBoxVRDP)

Never, ever, install a mismatched version of the VirtualBox extension pack, particularly when the latter is taken from a beta. In your case the software is an unofficial fork, so all versions of the extension pack are a mismatch.

[RaoulTeeuwen]

Thanks for the quick reply @mpack . I thought by using http://download.virtualbox.org/virtualbox/6.1.0_RC1 i was using official versions. My bad. I assume when i use http://download.virtualbox.org/virtualbox/6.1.10/ i'm o.k. Will look into that than.

[mpack]

I assume when i use http://download.virtualbox.org/virtualbox/6.1.10/ i'm o.k.

You are, provided you also use extension pack 6.1.10.

[RaoulTeeuwen]

Thank you again. Got it working.

[mpack]

Thanks for reporting back.