Problem with installing the mobility Service on an EC2 Linux MAchines

Question

Problem with installing the mobility Service on an EC2 Linux MAchines

nuage compte 90

Hello, I am Trying to migrate an EC2 Linux machine to Azure.

at the installation phase of the mobility Service, I got an Error.

always same error and it's about Mobility service.

I tried both Ubuntu 22.04 and 24.04 and same error

User's image

any help?

or let me know which linux version is functional on EC2?

nuage compte 90 Reputation points

2025-09-03T15:55:42.8333333+00:00

Hi Anurag,

as said, I Installed another kernel on ubuntu 22.04, I installed 5.15.0-1072-azure as insicated in the matrix, same error is generated.

I donc't find Ubuntu 20.04. for that I am using ubuntu 22.04

I also Used Redhat 9 and same problem,

there is those two OS which need the standard Linux Mobility service if I am not wrong .. But I don't find any link for this standrd MS.

any help on that?
Anurag Rohikar 3,190 Reputation points Microsoft External Staff Moderator

2025-09-05T08:07:25.7+00:00

Hello nuage compte, just checking to see if you have a chance to check my previous response and helped, do let me know if you have any further questions on this. Thank you!

Answer accepted by question author

Anurag Rohikar 3,190 Microsoft External Staff Moderator

Hello nuage compte, thank you for providing the detailed troubleshooting steps you've taken. You've hit on a critical and often-overlooked detail of the Azure Site Recovery (ASR) process for AWS-to-Azure migrations. The reason you are consistently encountering the ASRMobilityServiceKernelNotSupportedV2 error, even after changing your kernel, is due to using the incorrect Mobility Service agent.

Root Cause: The Wrong Mobility Service Agent

There are two different versions of the ASR Mobility Service agent, each designed for a specific migration scenario:

Generic Agent (for VMware/Physical Servers): This agent is for migrating on-premises physical servers, VMware VMs, or Hyper-V VMs. This agent has very strict kernel-level validations that are not designed for cloud-provider-specific environments like Amazon EC2.
AWS-Compatible Agent (for EC2 VMs): This is a specialized agent that is configured to work correctly within the AWS environment. It is not designed to be installed manually.

When you manually ran the installer, you were using the generic agent. Because this agent is not compatible with the AWS EC2 environment, the installation fails and returns the misleading "kernel not supported" error, regardless of the kernel you are running.

Recommended Solution: Use the Azure Migrate Workflow

The correct and officially supported method for migrating EC2 instances to Azure is to let the Azure Migrate tool handle the agent installation automatically.

Next Steps:

Stop Manual Installation: Do not attempt to manually install the Mobility Service on your EC2 instance.
Use the Azure Migrate: Server Migration Tool:

In the Azure Portal, navigate to your Azure Migrate project.
Under "Server Migration," discover your AWS VMs.
When you configure replication for your EC2 VM, the Azure Migrate appliance will automatically push the correct, AWS-compatible Mobility Service agent to the machine. This agent is specifically designed for the EC2 environment and will not have the same validation issues.
This is the standard and most reliable method for a successful migration from AWS to Azure.

Documentation for reference:

I hope this provides the clarity you need. Please let me know if you have any further questions. Thank-you!

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5 additional answers

Your answer

nuage compte 90 Reputation points

2025-09-03T15:55:42.8333333+00:00

Hi Anurag,

as said, I Installed another kernel on ubuntu 22.04, I installed 5.15.0-1072-azure as insicated in the matrix, same error is generated.

I donc't find Ubuntu 20.04. for that I am using ubuntu 22.04

I also Used Redhat 9 and same problem,

there is those two OS which need the standard Linux Mobility service if I am not wrong .. But I don't find any link for this standrd MS.

any help on that?
Anurag Rohikar 3,190 Reputation points Microsoft External Staff Moderator

2025-09-05T08:07:25.7+00:00

Hello nuage compte, just checking to see if you have a chance to check my previous response and helped, do let me know if you have any further questions on this. Thank you!

Answer 1

nuage compte 90

thank you so much for your help @Anurag Rohikar , yes it helps..

I still have a couple of question please if you can help me on that.

As I am the onwer of the subscription, Should I also have the "contributor/owner role" to create the Azure Migrate project and the "application developer " Role to register the discovery appliance?

should I have both role for all workloads? (vmware, hyperV and Phsyical server)?

Anurag Rohikar 3,190 Reputation points Microsoft External Staff Moderator

2025-09-08T17:21:25.31+00:00
Hello nuage compte,

Great questions, Happy to assist you.

To create an Azure Migrate project, you need to be Contributor or Owner on the subscription.

To register the discovery appliance, you need permission in Azure AD to create an app registration. Typically, this means having the Application Developer role (or higher, like Cloud Application Administrator). In some tenants, app registration is open to all users in that case, you don’t need the role explicitly.

These requirements are the same no matter which workloads you’re migrating (VMware, Hyper-V, physical servers, or AWS/GCP VMs).

Docs for reference:

Permissions in Azure Migrate

Troubleshoot the Azure Migrate appliance

I hope the above information clarifies your doubt. Thank you
Anurag Rohikar 3,190 Reputation points Microsoft External Staff Moderator

2025-09-09T10:27:21.43+00:00

Hello nuage compte, Just checking to see if you have a chance to check my previous response and helped, do let me know if you have any further questions on this.
If the above helped please do consider accepting the answer for community benefit. Thank you!

Answer 2

nuage compte 90

Hi ,

the replication passed thanks to push installtion, I can use push installation for the windows 2019 server machine?

Also I have a question, should I use those instruction for my Redhat8 aws EC2 before migration?

https://learn.microsoft.com/en-us/azure/migrate/prepare-for-migration?view=migrate#linux-machines

Anurag Rohikar 3,190 Reputation points Microsoft External Staff Moderator

2025-09-08T12:45:05.84+00:00
Hello nuage compte,

Glad to hear replication worked after using push installation.

Windows Server 2019 EC2: Yes, you can also use push installation for your Windows Server 2019 EC2 VM. Azure Migrate automatically installs the correct Mobility Service agent during replication, so you don’t need to install it manually. Reference: Mobility Service installation – Windows

Red Hat 8 EC2: Yes, please follow the Linux prerequisites documented here: Prepare for migration – Linux machines. This ensures your Red Hat VM is ready for replication. The Mobility Service itself will be pushed automatically by the Azure Migrate appliance when you configure replication.

This way you don’t need to worry about manual installation both Windows and Linux AWS VMs are supported with push install through Azure Migrate.
Thank you for the confirmation! Hope this helps.

Answer 3

Hello nuage compte, Thanks for reaching out on Microsoft Q&A and really appreciate your patience while we looked into this.

From the error log in your screenshot, what this means:

The Azure Site Recovery Mobility Service you are installing does not support the Linux kernel version running on your EC2 machine.
In your case, the kernel is: 6.14.0-1011-aws (a newer AWS-specific kernel).
The installer exits with code 99 because it validates OS + kernel support before continuing.

Why it happens:

Azure Site Recovery (ASR) Mobility Service supports only specific distributions + kernel versions.
Ubuntu 22.04 is supported but only with certain GA kernel versions (not the custom AWS-provided kernels like 6.14.*).
Ubuntu 24.04 is not yet supported for ASR (as of now).

Recommended Solutions and Workarounds:

To successfully install the Mobility Service, you must ensure your Linux machine is running a kernel version that is officially supported by Azure Site Recovery.

Verify ASR Support Matrix:
Before any action, consult the official Microsoft Azure Site Recovery support matrix for Linux. This document is the single source of truth for all supported operating systems and their corresponding kernel versions.
Reference: Azure Site Recovery support matrix - Linux
Use a supported kernel:
- For Ubuntu 22.04, ASR usually supports kernels like 5.15.*.
- You may need to install a supported kernel package:
```
     sudo apt update
     sudo apt install linux-image-5.15.0-*-generic
     sudo reboot
```
  Then re-run the installer.
Avoid Currently Unsupported Versions: Ubuntu 24.04: This is a very new release and is not yet listed in the ASR support matrix. It is highly recommended to avoid using this version for ASR replication until official support is announced.
Use a Fully Supported OS Version:
If you have the flexibility to deploy a new instance, consider using a Linux distribution and version that has a long history of ASR support.
- Ubuntu 20.04 LTS: This version is widely supported and has fewer kernel-related compatibility issues with ASR.
- Other Supported Distributions: Check the support matrix for other options like CentOS, RHEL, or SUSE Linux Enterprise Server.

Hope this helps! If you have any further questions, please let us know. Thank you!

Answer 4

nuage compte 90

Hi Arnurag,

This what I get when I start replication:

User's image

more details.. User's image

User's image

any help?

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