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Re: Cannot open a new task for the virtual computer
Posted: 7. Sep 2021, 14:50
by Taque
fth0 wrote:AFAICS, the error code means that VirtualBox could not find all certificates needed to verify the code signature(s) of the VMMR0.ro file. If this assumption is correct, there will be at least one intermediate or root certificate that is only available on one of your hosts.
Right, I've encountered the same problem and found out that Windows 7 is missing support for SHA256 signing component. So I installed Microsoft update KB3033929, restart the computer and the VM works
. Hope that helps.
Re: Cannot open a new task for the virtual computer
Posted: 7. Sep 2021, 14:53
by scottgus1
Thanks, Taque, for the info! This might be pertinent for other topics running right now, I'm putting it in my links.
Re: Cannot open a new task for the virtual computer
Posted: 25. Dec 2021, 17:33
by timtimtim
Taque wrote:Right, I've encountered the same problem and found out that Windows 7 is missing support for SHA256 signing component. So I installed Microsoft update KB3033929, restart the computer and the VM works
. Hope that helps.
It does indeed, thank you.
Re: Cannot open a new task for the virtual computer
Posted: 5. Jul 2022, 03:33
by MackDick
Taque wrote:fth0 wrote:AFAICS, the error code means that VirtualBox could not find all certificates needed to verify the code signature(s) of the VMMR0.ro file. If this assumption is correct, there will be at least one intermediate or root certificate that is only available on one of your hosts.
Right, I've encountered the same problem and found out that Windows 7 is missing support for SHA256 signing component. So I installed Microsoft update KB3033929, restart the computer and the VM works
. Hope that helps.
Works perfect, thank you.