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Does your 720 printer is not working on Windows 10 in a proper manner? Is there some connection issue with your printer and Windows? You need to check that your printer is properly connected to Windows. You need to disconnect your printer and then again try to connect it with your Windows. This solution will definitely resolve the issue in an instant manner. In case the issue is still not resolved, you can consult a certified Dell tech professional team of Windows. The professional will provide you the best guidance for fixing the particular issue.