| Event Id | 10042 |
| Source | ISA Server Firewall service |
| Description | Host is down. For more information about this event, see ISA Server Help. |
| Event Information | According to Microsoft: Cause: The socket operation failed because the destination host was down. Resolution: confirm the status of the remote host. Check the following: 1. Ping the remote host you were connected to. If it does not respond, it might be off-line or there might be a network problem along the way. If it does respond, then this problem might have been a transient one (so you can reconnect now), or the server application you were connected to might have terminated (so you might not be able to connect again). 2. Ping a local host to verify that your local network is still functioning (if on a serial connection, see next step). 3. Ping your local router address. If you are on a serial connection, your local router is the IP address of the host you initially logged on to using SLIP or PPP. 4. Ping a host on the same subnet as the host you were connected to (if you know of one). This will verify that the destination network is functioning. 5. Use the tracert command at the command prompt to determine the path to the host you were connected to. This wont reveal too much unless you know the router addresses at the remote end, but it might help to identify if the problem is somewhere along the way. |
| Reference Links | Host is down |
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