Have you tried running XYZ Printing, et. al. as an administrator? Right-click on the icon and "Run as Administrator". The applications may be having trouble accessing the COM port.
this post was submitted on 09 Nov 2023
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Nope - that's the one thing I didn't do (because 3D maker worked with out it)
Thanks for the reminder though - I will try that in the morning.
Tried that - no difference.
Tried setting com port and baud rate in Cura environment for USB Printing NG plug in. No joy (though monitor in Cura stops complaining the printer is offline, it won't do things like pre-heat the head)
Real head scratcher.
Hey, I had issues with usb connection with a totally different printer and octoprint, but with similar symptoms.
In that case the issue was the 5V on the USB connector that caused the problem.
Try a little piece of electric tape to mask the 5V band on the USB-B connector.
Now that is something I wouldn't have thought about.
Will try it and see - anything is worth a go!
Guys
Problem solved - nope, let's be honest worked around.
You know that saying in Technology & Design "never update the software" with respect to CNC machines etc.?
well it seems if I install the latest and greatest from XYZ the printer is not recognised. If I keep the original versions everything works (whatever version of windows is installed). So now I have to work out a way of stopping the auto-update...