Unable to start any VM since upgrading from 4.2.14 to 4.2.16

[cw1972]

I've searched the forums for keywords relating to my error but found nothing, so I'm posting my issue here.

Yesterday I updgraded from 4.2.14 to 4.2.16 and since them none of my VM's will start, all give this error:

- Failed to load VMMR0.ro (VERR_LDR_MISMATCH_NATIVE)

- Details:
Result Code:
E_FAIL (0x80004005)
Component:
Console
Interface:
IConsole {db7ab4ca-2a3f-4183-9243-c1208da92392}

So I uninstalled 4.2.16, rebooted when asked, and reinstalled 4.2.14, recreated my VM using the 'Use existing disk' option, but still I get the same image.

So I uninstalled again, but after rebooting I went through the file system and manually removed everything related, \Program Files\Oracle, %APPDATA%\.VBOX, etc. and through the registry manually removing relevant entries before installing 4.2.16 again, but still same error.

Any thoughts people?

[Perryg]

Did you also update the ExtPack?

[cw1972]

I did when I upgraded from 4.2.14 to 4.2.16 yes, as it did prompt me.

[cw1972]

Thanks to this post: viewtopic.php?f=6&t=34542&p=261721#p261721

my issue is now resolved - it turns out I have Driver Verifier running on my system, disabling this and rebooting resolve my problem

[rodbras]

I also had a hard time while upgrading from 4.0.10 to 4.2.16:

virtualbox failed to load vmmr0.r0 (verr_ldr_mismatch_native)

The solution for Windows Vista as host was to remove the folder

C:\Users\USERNAME\AppData\Local\VirtualStore\Program Files\Oracle

I hope it works for you too

[rodbras]

Hi

To complement my information, this solution to remove the folder

C:\Users\USERNAME\AppData\Local\VirtualStore\Program Files\Oracle

was suggested in

viewtopic.php?f=6&t=34542

Also see

http://engineernabendu.blogspot.com.br/ ... issue.html

that suggests a specific file instead of a whole folder.

Did work for me.