HP Printer PCL XL Error Kernel Unsupported Protocol [How to Fix]

In this article, we will discuss some troubleshooting methods to fix the HP printer PCL XL error kernel unsupported protocol.

Causes of the HP Printer PCL XL Error Kernel Unsupported Protocol

The following are the causes of the HP printer PCL XL error kernel unsupported protocol:

1. The Printer and Computer have a Mismatched Font

If a computer’s font cannot be parsed (matched) by your HP printer, then it will lead to the error being discussed.

2. Conflicting Applications are Causing Interference

If the printer’s print data stream is experiencing interference from another application such as your computer’s antivirus, it might cause certain characters to become difficult for your printer to translate. Such interference can cause the error.

3. Corrupt or Outdated Printer Driver

When your printer driver becomes corrupted or outdated, it will become incompatible with some printing modules. When a print job is sent in such a case, your printer might not render it properly thereby leading to the error under discussion.

4. User Profile is Corrupt

A corrupt user profile can cause the print job’s characters to become non-parsable.

HP Printer PCL XL Error Kernel Unsupported Protocol Troubleshooting Methods

You can fix the HP printer PCL XL error kernel unsupported protocol with the following troubleshooting methods:

1. Change the Default Settings of your HP Printer

How to Change the Default Settings of your HP Printer

Do the following to change the default settings of your HP printer:

Step 1: On your computer, click “Start”.

Step 2: Click “Settings”.

Step 3: Right-click on “Printer”.

Step 4: Right-click on your HP printer or its icon.

Step 5: Click the drop-down menu and select “Properties”.

Step 6: Click on the tab labeled “General”.

Step 7: Click on “Print processor”.

Step 8: Select “RAW” for the default data typesetting.

Step 9: Click on “OK”.

Step 10: Click on “OK” to go back to the computer desktop screen.

Try printing a document. If it prints, then the error has been resolved and you don’t have to keep troubleshooting. However, if the HP Printer PCL XL Error Kernel Unsupported Protocol isn’t fixed, move to the method below.

In this article: HP Printer Errors and Solutions [Detailed] we discuss several HP printer errors and how to fix them.

2. Reset your HP Printer

To reset your HP printer, click this: HP Printer Errors and Solutions – HP Printer Error Do Not Use Cartridges and then refer to the instructions we shared article under the “Reset your HP Printer” subsection.

3. Reinstall your HP Printer Driver

To reinstall your HP printer driver, click on this: HP Printer Errors and Solutions – Uninstall and Reinstall your HP Printer and follow the steps we shared.

4. Restart your Print Spooler Service

To restart your print spooler service, do the steps below:

Step 1: Click on the Windows icon on the taskbar.

Step 2: In the search box, type “Services”.

Step 3: Right-click “Services” in the search results.

Step 4: Click on “Run as Administrator”.

Step 5: If you get a UAC prompt, click on “Yes”.

Step 6: Right-click “Print Spooler”.

Step 7: Click “Restart”.

If none of the troubleshooting methods resolve the HP printer PCL XL error kernel unsupported protocol, contact HP Customer Support for further assistance.