@olivierlambert , @gduperrey
Thanks everyone so much for the help. I moved the host computer over to the outside facing network and updated, 52 updated packages. Strangely enough I could still not reach the host PC the first time I tried after updating. Instead of getting the error mentioned before, I hit the login page, then got a blank white page after I logged in. I connected both systems to the outside facing network and re-tried it and then it connected no problem. After this I was able to unplug both systems and put them both back on the air-gapped LAN, and connect no problem. Is there som resource that needs to be downloaded the first time you try to connect? The updates definitely fixed my original problem, I'm just wondering for future reference if the white screen is supposed to happen.