Change a Network Printer from Offline to Online

Sometimes, a network printer shows offline on a computer (Windows operating system) while it is fine on another computer. This is because the port used for the printer doesn't work right. A possible reason is that the port may use SNMP message to check the status of the printer while the printer doesn't respond to it correctly. A solution to this problem is to disable this setting for that port. However, one may find out that the port configuration doesn't work either, like below,

Here I'll give a simple way to fix this problem. Go to Devices and Printers, right-click on the printer in the Printers window, choose Printer Properties menu. On the Printer Properties window, go to Ports tab. Click the Add Port button. A Printer Ports window is popped up. Select "Standard TCP/IP Port" from the "Available port types", then click New Port button

A Printer Port Wizard is shown. Follow the Wizard, and fill the IP address for the Network Printer, then the Wizard will automatically search the printer on the given address. When the Wizard find the printer and commutes with it right, the Wizard finish and a new port is created for the Pinter.

After the Wizard is finished, one will be redirected to the Printer Properties window and the new port is chosen for the Printer. Click the Configure Port. Uncheck the SNMP Status Enabled setting at the bottom of the Configure Standard TCP/IP Monitor. Close the Printer Properties window. The Printer will be back online immediately.