Step 3: Check to see if the firewall software is blocking communication
If you cannot access the EWS and are sure both the computer and printer have active
connections to the same network, the firewall security software might be blocking
communication. Temporarily turn off any firewall security software running on your
computer and then try to open the EWS again. If you can open the EWS, try using the
printer (for printing).
If you are able to open the EWS and use your printer with the firewall turned off, you
need to reconfigure your firewall settings to allow the computer and printer to
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Solve a problem
communicate with each other over the network. For more information, see Configure
your firewall software to work with the printer.
If you are able to open the EWS, but are still unable to use the printer even with the
firewall turned off, try enabling the firewall software to recognize the printer. For more
information, see the documentation provided with your firewall software.