Azure Migrate appliance error on Discovery Source - Validation Failed

Question

I haven an existing Hyper-V cluster that is running well, no errors, all operational (and production environment). I have a new HCI Azure Local infrastructure with servers connected to local domain and same subnet. Firewalls disabled on all servers. Installing Azure Migrate Appliance is failing at Discovery Source when adding the Cluster and/or a Hyper-V (which in turn adds the cluster) with Validation Failed - "source validation failed" "validation failed for one or more hosts in the cluster". no other errors. Hosts File on appliance is set to resolve all cluster and host names. Creds should be fine using domain administrator account. enabled WinRM trusted hosts for the domain. I've even added the appliance itself to the on prem active dir domain and is on the same Subnet. No firewalls between appliance and HV servers/cluster. Connectivity to Azure itself from appliance appears to be fine and passes all checks. Any recommendations are appreciated to get past this point.

Answer 1

Hi Scot,

Thank you for reaching out with your question on the Q&A portal. I appreciate you sharing the details of your issue with the Azure Migrate appliance and the validation failure during discovery.

Based on your description, it seems like you’ve already taken several troubleshooting steps, such as verifying connectivity, checking firewall settings, and ensuring proper name resolution via the hosts file. Since the error persists, I’d recommend double-checking the following:

• Ensure the domain administrator account has the necessary permissions on all Hyper-V hosts and the cluster. Sometimes, even if the account is a domain admin, certain local permissions might be required.

Verify that WinRM is properly configured and accessible from the Azure Migrate appliance to all cluster nodes. You might want to test WinRM connectivity manually using Test-WSMan from the appliance to each host.

Check the Azure Migrate appliance logs for more detailed error messages. The logs are typically located under C:\ProgramData\Microsoft Azure\Logs and may provide additional clues.

Here are some helpful Microsoft articles that might assist you further:

Troubleshoot Azure Migrate appliance deployment and discovery

Hyper-V host cluster requirements for Azure Migrate

If you’re still facing issues, feel free to provide any additional error logs or details, and I’d be happy to help further.

Best regards,

Alex

P.S. If my answer helps you, please Accept my answer.