When dealing with this issue you can try out one of the following troubleshooting tips to get rid of it as soon as possible.
How can I fix printer error: Unsupported Protocol?
1. Set Send True Type as Bitmap as Enabled
2. Change the Print Optimizations value
If the first procedure didn’t work, it’s a good idea to change the Print Optimizations value. Follow the above steps to do so.
3. Update your printer’s USB drivers
Let’s continue with the basics. Follow the above procedure to update your printer’s USB drivers or find them online.
4. Remove your printer and add it again
If these steps didn’t help, you could also try to remove the printer from the system where it has been installed. Then, add it again and check if the issue persists. Other users also try to directly plug in the printer with a USB, then right-click its icon and select Printer Properties. Open the Ports tab and select the USB port before trying to print again. Don’t hesitate to try any one of these tips and comment below the one that worked for you. You could also check your printer’s manual for more information on its diagnostic features. In case of having other questions, let us know in the comments below. READ ALSO:
How to fix XPS printer error 1168: Element not found FIX: MacBook isn’t connecting to printer FIX: My printer is making black lines on paper
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