Console shows this error when trying to log in:
Ensure the Core's hostname can be resolved from the workstation that the remote console is on. If the following command fails, or returns the wrong IP address, then you will receive a 503 error:
If the nslookup returns the correct IP address, continue on to the following steps to start the LDAppWeb Application Pool on the Core Server.
1. To start the LDAppWeb Application Pool, open The IIS Manager, expand your core server and select the Application Pool dropdown:
2. Right-Click LDAppWeb and select Start:
Additional Note: Please make sure that your server is not out of disk space.