UPDATE: Other folks reported trying different things to resolve this issue, but what worked for me was to reload the USB driver for the IC-7200 radio.
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Due to a recent Win 10 Features update, Trimode currently cannot initiate the Winmor TNC correctly, so the Colorado Springs HF gateway will only be able to run ARDOP until I get things sorted out.
After a silent period of several years, (while I was working in Burma), I have re-activated my Winlink RMS server. The new location is in the port city of Ranong in south Thailand, about 200 miles north of my previous QTH on Phuket Island. Ranong is located at the narrowest part of the Malay peninsula between the Indian Ocean and South China Sea, and so good coverage is expected in those regions.