I checked the port & the remote agent is using 10000.
I cannot establish a trust relationship. I get the same error (instantly) as when I simply click on the computer name: "Failed to log on to ..."
I tried steps in (http://www.symantec.com/business/support/index?page=content&id=TECH24413).
Apparently I can add folders from that computer if I use its IP address & not its name. Although in all other respects networking on the media server seems to be fine. I can access the computer by name in windows explorer. I can ping & its name is resolved to its ip.
When I used the Resource credentials test, connecting to selections under computer name failed, but the one using ip address succeeded (same folder). see attached pic.