Application migration service - Failed to identify volumes for replication.

Based on the error message you're encountering, it appears that the AWS Application Migration Service (AWS MGN) is having trouble identifying the volumes on your Windows server for replication. This can happen due to various reasons, but since you've confirmed that there's enough space and the drives are healthy, we need to look at other potential causes.

Here are some steps you can try to resolve this issue:

1. Ensure you're using the latest version of the AWS Replication Agent. Older versions may have compatibility issues with certain Windows configurations.

2. Check if there are any third-party disk management tools or backup software running on the server that might be interfering with the agent's ability to read the disk information.

3. Verify that the user account used to install the agent has sufficient permissions to access and read all disk volumes on the server.

4. Try reinstalling the AWS Replication Agent. Sometimes, a fresh installation can resolve issues that occurred during the initial setup.

5. If you're running the installer from the command prompt (CMD), try running it from PowerShell instead. In some cases, the AWS Secret Key might not be pasted correctly in CMD, leading to installation issues.

6. Check the AWS MGN Agent logs for any specific error messages or indications of the problem. On Windows, these logs are typically located in the C:\Program Files (x86)\AWS Replication Agent\log directory.

7. Ensure that there are no firewall rules or security software blocking the agent's communication with the AWS MGN service.

8. Verify that the server meets all the prerequisites for AWS MGN, including supported operating system version and required system components like .NET Framework.

If none of these steps resolve the issue, you may need to contact AWS Premium Support for more detailed troubleshooting specific to your environment. They can provide guidance tailored to your specific server configuration and help identify any underlying issues preventing the agent from identifying the volumes for replication.
Sources
Troubleshooting agent issues - Application Migration Service
Application Migration Service failing on "Connect AWS Replication Agent to Replication Server" | AWS re:Post