For Samsung Printer Offline, reset printer system clears error states.
Firstly, pick System Preferences from the Apple tab.
Second, click the Printers & Scanners, Print & Fax, or Print & Scan tab.
Click Reset printing system & Reset in the Printers window by performing a right-click (or Control + Click).
Moreover, log in using the admin username and password.
Re-add the printer to the list after that, then try printing.
As a result, the problem of How to Bring an Offline Samsung Printer Online can be resolved quickly.