Hyper-V error 0x80070570 when starting VM

tecknot · Wednesday at 2:01 PM

Sorry for being such an annoyance, but I'm a bit desperate.

Okay, previously I created a .vhdx on a 130GB partition and had attempted to run Hyper-V and connect to the .vhdx. This was not working so I deleted the .vhdx and decided to create it in a new VM (I have no other VMs). So, I was able to create a new VM in the Hyper-V manager (after a small hiccup). Cool, I started up the VM, but I got an error 0x80070570 (see below).

I did a "Google" search and found some fixes, but none of them worked for me. They weren't in same scenario as in my situation. So, now I am at another loss and don't know what to do.

Do any of you happen to know what I can do to get my VM up and running.

Kind regards,

tecknot

neemobeer · Wednesday at 2:32 PM

In Windows (the host) are you able to right-click the ISO and mount it? Most of the errors point to an issue with the ISO itself.

tecknot · Wednesday at 2:39 PM

neemobeer said:
In Windows (the host) are you able to right-click the ISO and mount it? Most of the errors point to an issue with the ISO itself.

Hi neemobeer,

Ah, no I can't. The ISO file is corrupted. Guess I'll have to remake it.

Thanks!

Kind regards,

tecknot

tecknot · Wednesday at 4:58 PM

Hi @neemobeer,

Tried a few times to download the ISO file from Microsoft, but each time failed, some unknown error.

Tried it with another old ISO and it seems to be working. I will follow through with this installation just to see if it is all working out. I'll be back if it isn't.

Kind regards,

tecknot

tecknot · Wednesday at 5:14 PM

Okay, running into a problem... When I attempt to create a .vhdx to install Windows on (according to this Turorial: Create Windows 11 Virtual Hard Disk (VHDX) at Boot to Native Boot), I am getting errors in Diskpart the last of which is "Access is denied." When I enter the command "List volume," it only list the USB drive which has the ISO file. It doesn't list any of the other drives on the machine, so I can't designate the partition set aside for the .vhdx.

Any help would be greatly appreciated.

Kind regards,

tecknot

tecknot · Wednesday at 5:19 PM

Just tried to use Diskpart outside of the Hyper-V VM session and listed the volumes. There it indicates that the partition for the .vhdx is "I". So, I tried that in my command to create the .vhdx inside the Hyper-V, but Diskpart could not find the path.

Still stuck.

Kind regards,

tecknot

tecknot · Wednesday at 5:24 PM

Here is a screenshot of the volumes in Diskpart while in the Hyper-V. Note that the volume listed is the DVD ROM.

Kind regards,

tecknot

tecknot · Wednesday at 5:57 PM

I exited the Command prompt and I proceeded to install Windows just to see what would happen. Guess what, Windows installed on the .vhdx. Don't ask me how. Must have been because it was formatted so according to the VM settings. Anyhow, now I have an old version of Windows 11 in Hyper-V.

Now I just have to get 26H2 on a USB drive and reinstall Windows or just do an update, I guess.

Kind regards,

tecknot

tecknot · Wednesday at 6:08 PM

Here is something weird... I just discovered that the .vhdx was actually installed on the USB on which the ISO file is on. Now, when I want to start Hyper-V to access the VM, I have to have the USB plugged in. And I guess the stuff on the intended .vhdx is just junk.

ugh!

Kind regards,

tecknot

neemobeer · 2026-10-16T09:33:03-0400

You shouldn't need to create a vhdx file at all, in your VM creation screen just tell Hyper-v the disk size you want and you can select vhdx vs vhd and it will handle creating the disk.

tecknot · 2026-10-16T09:46:20-0400

neemobeer said:
You shouldn't need to create a vhdx file at all, in your VM creation screen just tell Hyper-v the disk size you want and you can select vhdx vs vhd and it will handle creating the disk.

Hi neemobeer,

Yeah, I was able to create a fresh VM with Windows 11 26H2, hooray! But, I was hoping that I could do a .vhdx so that I could boot directly or as a VM. I guess it doesn't work that way. It seems it's one or the other (direct or VM).

Thanks for all your help, neemobeer. I greatly appreciate it.

Kind regards,

tecknot

P.S. I am going to leave this thread unsolved on account I still have outstanding question(s).

neemobeer · 2026-10-16T10:09:51-0400

You can boot directory to a vhdx file, but that is only supported in Windows Enterprise and Education editions, doesn't work in Pro or Home

tecknot · 2026-10-16T10:11:53-0400

neemobeer said:
You can boot directory to a vhdx file, but that is only supported in Windows Enterprise and Education editions, doesn't work in Pro or Home

That's a bummer. Thanks, neemobeer.

Kind regards,

tecknot

Bree · 2026-10-16T18:51:38-0400

neemobeer said:
You can boot directory to a vhdx file, but that is only supported in Windows Enterprise and Education editions, doesn't work in Pro or Home

tecknot said:
That's a bummer. Thanks, neemobeer.

That's not true. I have used native boot .vhdx in both Home and Pro. You can take a copy of the .vhdx from a Hyper-V VM and set it up to native boot.

The Windows 11 VHDX file used in this tutorial was created with a Hyper-V Windows 11 virtual machine, and copied to the OS to dual boot with.

Native Boot Windows 11 Virtual Hard Disk (VHDX)

This tutorial will show you how to boot a Windows 11 VHDX file natively to dual boot with Windows 10 or Windows 11. Native Boot allows you to create a virtual hard disk (VHDX), install Windows to it, and then boot it up, either on your PC side-by-side with your existing installation, or on a...

www.elevenforum.com

neemobeer · 2026-10-16T18:56:57-0400

Good to know

Hyper-V error 0x80070570 when starting VM

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