Error when I create new VM

[jordanblai]

Hi,
I'm new on xproxmox and I don't know why but when I create a new virtual machine I tried to run but I have thi error:

TASK ERROR: KVM virtualisation configured, but not available. Either disable in VM configuration or enable in BIOS.

Any know what is this problem ?
Help!

 

[dietmar]

You need to enable virtualisation in the mainboard BIOS ...

 

[Jack008]

Hi there,

I hit the exact same failure today, when I was to start the VM: "KVM virtualisation configured, but not available. Either disable in VM configuration or enable in BIOS".

So other than " enable virtualisation in the mainboard BIOS ", do I have the option to have it disabled in VM configuration? If so, what are the steps to do it ?

Thanks,

Jack

 

[Stoiko Ivanov]

You can disable it for a virtual machine in the GUI - go to that virtual machine->Options->KVM Hardware Virtualization (and disable it).

However, be aware that the performance w/o KVM is going to be really slow!

 

[Oliver Krüger]

Encountered the exact same problem, but "virtualisation" is already enabled in the BIOS. What else can I do?

 

[Stoiko Ivanov]

hm - if the error-message says that 'KVM virtualisation configured, but not available' then the system does not see the virtualisation as enabled.
* check the output of `dmesg` after a boot for hints to where the problem might be
* if there are any updates available for your firmware/BIOS make sure to install them

hope this helps

 

[modulistic]

Encountered the exact same problem, but "virtualisation" is already enabled in the BIOS. What else can I do?

Today I fixed this very issue by disabled TPM support on the BIOS on my old Dell Latitude E4300. PVE 6.1

 

[PachangaDad]

I can also agree, today I was able to successfully activate virtualisation on an old Dell Optiplex 780 bios A15, by deactivating the the trust (disable) of Virtual in the BIOS entry.

 

[Abderrahim BOUTALBI]

you should put this option of your VM you have create on prox mox at No , KVM HARDWARE virtualisation --->NO

 

[damasceno]

Thank very much for your tip @Abderrahim BOUTALBI ! Perfect!

​

 

[lmaza]

you should put this option of your VM you have create on prox mox at No , KVM HARDWARE virtualisation --->NO
View attachment 24943

Thanks, it works for me.
LMC

 

[Alexisjr]

you should put this option of your VM you have create on prox mox at No , KVM HARDWARE virtualisation --->NO
View attachment 24943

Thanks, Perfect

 

[Mesquita]

Thanks

you should put this option of your VM you have create on prox mox at No , KVM HARDWARE virtualisation --->NO
View attachment 24943

Thanks Abderrahin Boutalbi.
After checking Virtual box NESTED - OK
BIOS enable - OK
I saw your contribution and started my first VM on my tester environment.
I leave here any links to contribute when staying using VIRTUA BOX to run PVE servers and needs to enable NESTED using CLI.

https://ostechnix.com/how-to-enable-nested-virtualization-in-virtualbox/
https://stackoverflow.com/questions/54251855/virtualbox-enable-nested-vtx-amd-v-greyed-out

 

[krishnashakya]

you should put this option of your VM you have create on prox mox at No , KVM HARDWARE virtualisation --->NO
View attachment 24943

This worked for me as well. Thanks!

 

[lawjigga]

This is the answer, if only i discovered it 8 hours ago. Oh my god, i want to shoot myself in the head!

you should put this option of your VM you have create on prox mox at No , KVM HARDWARE virtualisation --->NO
View attachment 24943

 

[ssfunerals]

you should put this option of your VM you have create on prox mox at No , KVM HARDWARE virtualisation --->NO
View attachment 24943

It worked thanks !

 

[lit-upp]

you should put this option of your VM you have create on prox mox at No , KVM HARDWARE virtualisation --->NO
View attachment 24943

This worked for me also, legend thanks a lot.

 

[androtakichi]

you should put this option of your VM you have create on prox mox at No , KVM HARDWARE virtualisation --->NO
View attachment 24943

It worked thanks !

 

[jeefyang]

you should put this option of your VM you have create on prox mox at No , KVM HARDWARE virtualisation --->NO
View attachment 24943

thank you,is work!!!!

 

[Dany.212]

Sie sollten diese Option Ihrer VM, die Sie auf Prox Mox erstellt haben, auf Nein, KVM-HARDWARE-Virtualisierung --->NEIN setzen
View attachment 24943

Vielen Dank, hat mir sehr geholfen!