QMM (Quest Migration Manager) Project Manager application fails to install agents on the cluster Exchange server.
The following error is logged in EMWMigration.log file:
EMWMigration::ucMain::Log Computer: [Cluster_node_name] | Error: 1722 | Description: The RPC server is unavailable.
| Severity: 0 | Source: EMWCluster::CheckCluster
The network path was not found.
However, cluster server and cluster nodes can be contacted from the QMM console machine successfully via UNC path as well as pinged.
The issue might be caused by the gateway filtering some RDP and UDP ports and thus blocking Exchange cluster nodes.
To troubleshoot the issue:
1. Start Cluster Administrator on QMM console machine.
2. Select Connect to command from the File menu and connect to the Exchange cluster node instead of connecting to the Virtual Exchange Server.
3. If you get the "The RPC server is unavailable" error, that means the gateway blocks cluster nodes access.
Make sure all cluster nodes are accessible with the Cluster Administrator and try installing the QMM agents on the cluster again.