Remote Desktop can't find the computer "FQDN". This might mean that "FQDN" does not belong to the specified network. Verify the computer name and domain that you are trying to connect to.
When I launch IE 10 and attempt connect to https://FQDN/Rdweb. I get my icons for the Remote Applications. When I click on any of the applications I first get RemoteApp windows that states "A website wants to run a RemoteApp program. Make sure that you trust the publisher before connect to run the program.
I click Connect and get the error above. This is on a PC that is in the domain so I don't understand why it's not working.