StarWind V2V Conversion Stuck at 96% Proxmox to Hyper-v

VM image converter (VMDK, VHD, VHDX, IMG, RAW, QCOW and QCOW2), P2V migrator
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StevenB
Posts: 6
Joined: Wed Jul 29, 2026 9:27 am

Wed Jul 29, 2026 2:23 pm

Hi all

As a first-time user of the Starwind V2V converter, I am attempting to migrate virtual machines on Proxmox 9 to two hyper-V Windows 2022 servers. Neither server is currently in a production environment.

The first virtual machine, a Linux-based OS with a 32 GB hard drive, was successfully migrated in six hours.

The second virtual machine, a server 2022 with a 320 GB hard drive, has been stuck at 96% progress for over seven hours. Initially it only took a few minutes to reach 96%.

The servers are 15th and 15th generation Dell with NVMe storage and 40 gigabit NICs.

Monitoring the NICs in Windows, data transfer fluctuates between 5 and 7 Mbps and CPU usage fluctuates between 1 and 2% on the Starwind application.

From reading other posts about slow transfer, it appears my system is running excessively slow.

Any assistance would be greatly appreciated.
yaroslav (staff)
Staff
Posts: 4406
Joined: Mon Nov 18, 2019 11:11 am

Wed Jul 29, 2026 3:10 pm

Try converting them to local files and copying them to the destination afterward.
StevenB
Posts: 6
Joined: Wed Jul 29, 2026 9:27 am

Wed Jul 29, 2026 3:57 pm

unfortunately the local file is greyed out and will not allow me to select it, is there a way of activating it?
yaroslav (staff)
Staff
Posts: 4406
Joined: Mon Nov 18, 2019 11:11 am

Wed Jul 29, 2026 4:13 pm

You can copy it to Hyper-V and convert it locally.
As a workaround, you can use something like instant recovery (e.g., Veeam or Altaro).
StevenB
Posts: 6
Joined: Wed Jul 29, 2026 9:27 am

Wed Jul 29, 2026 6:15 pm

Why is "Local Files" not available as a destination?

The first time I went to try it it was available but then it greyed out on the second attempt....
yaroslav (staff)
Staff
Posts: 4406
Joined: Mon Nov 18, 2019 11:11 am

Wed Jul 29, 2026 10:14 pm

Please let me know where you run the software.
StevenB
Posts: 6
Joined: Wed Jul 29, 2026 9:27 am

Thu Jul 30, 2026 8:44 am

The Software is run on the target server Windows Server 2022 Hyper-V, the source machine is Proxmox v9.
yaroslav (staff)
Staff
Posts: 4406
Joined: Mon Nov 18, 2019 11:11 am

Thu Jul 30, 2026 9:15 am

Could you please make sure you are running the software as an administrator? Thanks!
StevenB
Posts: 6
Joined: Wed Jul 29, 2026 9:27 am

Thu Jul 30, 2026 9:30 am

Yes I am logged in as administrator.

I have transferred the Proxmox files to the Hyper-v server and started the convert from "Local File" to "Hyper-v".

So far at 41% after 5 minutes...... I think this is the route going forward. I will let you if this works.
yaroslav (staff)
Staff
Posts: 4406
Joined: Mon Nov 18, 2019 11:11 am

Thu Jul 30, 2026 9:55 am

Thanks for your update. Glad to read that it works!
StevenB
Posts: 6
Joined: Wed Jul 29, 2026 9:27 am

Thu Jul 30, 2026 10:16 am

Thanks

This method has worked perfectly
yaroslav (staff)
Staff
Posts: 4406
Joined: Mon Nov 18, 2019 11:11 am

Thu Jul 30, 2026 10:51 am

You are always welcome.
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