If you are installing the software on a Windows 2003 or Windows XP computer, especially one that has service pack 2 installed, you may need to alter or turn off Windows Firewall and/or Windows ISA services. Open the Windows Services dialog box (Start > Run > services.msc) to determine if the services are running. The software communicates over HTTP, and your ISA or firewall might be configured to stop all communications and connections, especially via port 80.
If you see connectivity issues or cannot manage Jobs via the web interface, try turning off the Firewall/ISA service (as a test), and/or click "unblock" if prompted. Then restart the Vault service.
Or, you might try this change:
For remote servers to make connection to the internal Vault (using port 711 in this example)
ISA: New Protocol Definition: Server 711 - TCP Inbound port 711
New Server Pub Rule: Pub Rule: Specify Int IP address + specify Ext IP address
Configure to use above Protocol Definition
Restart ISA server
Other personal firewalls, such as Symantec/Norton, might create the same issue. If your Agent will not connect, shut off these services and restart the Vault service. See Using Antivirus Software for other important tips on exclusions.
Using XP as a "server": XP only supports the connections of 10 workstations or fewer