Problem:
You are able to ping printer and access printer via web browser. However, printer shows Offline on the printer server.

Solution:
Uncheck SNMP Status Enabled under Port Configuration
Procedure:
- Right Click Printer > Properties > Ports
 

- Select the port associated with the printer > Configure Port
 

- Under Port Settings > Untick SNMP Status Enabled > OK > Close
 

References:
- https://community.spiceworks.com/topic/457808-can-ping-printer-and-access-web-interface-but-cannot-print-via-network