My MG7720 keeps giving error messages saying it is offline or printer is not responding. Sometimes it works fine. Other times it won't connect at all. Last night my wife tried sending a document from her laptop and it said the printer was not responding. Over an hour later, the document printed on it's own without other documents being sent at that time. I've tried connecting the printer to my laptop via USB cable to run the diagnostics and it says everything is OK. I've updated the drivers from the Canon website so everything is up to date.
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