Had some USB trouble on a Creality Ender 2 maybe it's related. For me the issue was that the USB cable didn't sit well enough in the port which is a bit too large. I could solve it by pressing down the metal pin on top of the USB port. Now I can't remove the cable any more but the connectivity is stable ?
Hi and welcome
here are not so much people with a CR10 but maybe the COM port has changed and is now on another number?
And you could also try to delete the printer from Cura and add it again.
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