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This is really a WSJT-X question
Just to let you know, the main WSJT-X support forum is https://wsjtx.groups.io.
This one is mainly for JT-Alert issues.
Having said that check the ‘Audio’ tab (in WSJT-X) and make sure the 7300 is set, check the levels (in Window) - if the setup was working with HRD then stick with that - far too many other options to check/set if going direct via COMx - error does suggest is is Audio related not with ‘connection’ to the 7300.
I am helping a friend with Ham Radio Deluxe version 188.8.131.521, WSJT-X version 2.2.2, and JTAlert version 2.16.13 running on Microsoft Windows 10 64bit. He has an IC-7300 with the Icom USB cable and Icom driver installed. Everything worked properly prior to a Microsoft update on 9/16.
Microsoft updated his Operating System on 9/16 and he has not been able to get WSJT-X to communicate with the IC-7300 since. We have tried numerous settings, but these are the two errors with screen shots of the settings when each error pops up:
caused with these settings using HRD to communicate with the IC-7300. This worked fine before the OS updates:
We then tried settings found on a website that recommended what to use for the IC-7300 and that did not change anything.
This different error happens with these settings without using HRD to control the communications:
We uninstalled the USB Codec audio drivers and uninstalled the Icom USB cable made for this radio from device manager. We then disconnected the USB cable, rebooted the computer, then re-installed the Icom driver and re-connected the cable. The USB cable showed up under Ports and the USB Codec audio drivers under audio inputs and devices. The errors persist! What can we do to correct this? Searches on the internet produce no resolution and most are from similar errors from 2018, none current.