|Connecting the subject laptop via an Ethernet cable, cures the problem, and the connection succeeds, so we can rule out problems with RDT configuration, firewalls, and third party software.|
Well, you've troubleshot this issue down to the culprit so now you know what to do. Leave the laptop plugged in to the network and forget wireless. I'm not even mildly surprised to find out this issue is related to the laptop being connected wirelessly.
I've said the following before, and I'm so sure I'll be saying it again (and again, and again...) that I'm going to have to save it in a document so I can just cut/paste in the future.
Compared to a wired network connection, wireless sucks. It can never perform as well because of it's inherent susceptibility to lag and latency. So, if you plan on doing anything bandwidth intensive, video streaming, downloading big files, running an adobe connect session etc etc etc, don't expect it to perform as well as a wired connection.
I'm an avid gamer and a few years back while playing an FPS one of my friends (we connected to Team Speak so we could talk while playing) mentioned his game was running poorly. It was slow and locking up. I asked him how he was connected. He said he was connected wirelessly to the router sitting on his desk. That put the router about 3 feet (1 m) from his computer. Your signal just can't get any stronger than that. And, he was the only person connected to the LAN and using it at that time. I told him to kill the wireless interface and plug in with the wired. Within 5 minutes he was telling me, "This is great! It's working way better now"
That's wireless for you. The game we were playing was older and didn't transfer much data so that had nothing to do with his issue. It was the wireless.
Wireless is a convenience and nothing more. It's potentially possible that some day in the future we may be able to develope a wireless solution that doesn't suffer from the same lag/latency issues our present technology does.
It matters not how straight the gate,
How charged with punishments the scroll,
I am the master of my fate;
I am the captain of my soul.