*If you can't connect on COM5, you may need to reboot the PC, because another user is still logged in after they connected on COM5.
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*If you can't connect on COM5, you may need to reboot the PC, because another user is still logged in after they connected on COM5. If a reboot doesn't resolve the "Connect" problem, then shut the PC down, unplug the unit's power cord, and restarting the machine. This has has fixed the problem as of 3/19/17 - first time I've had the COM5 problem for a while.