Well, there is no single reason for Samsung m2020 offline problem. It can occur due to multiple reasons. To get your Samsung m2020 printer back online, you must turn off your printer and then turn it on again after 30 seconds. Make sure that the USB cable is fully inserted, not frayed, and completely fine to deliver optimum performance. Next, you must visit the Samsung website, enter your printer model and install the latest drivers to fix bugs and other issues. Another step that works effectively to eliminate the offline error is, setting your Samsung m2020 as a default device and reconfiguring it to Use Printer Online setting. If nothing worked out, then you should consult a printer expert and get on-site printer services.