Welcome Mark Aloway,
To better narrow this down, could you please confirm:
- Which version of Windows are you using (Windows 10 or Windows 11)?
- What is the exact error message you receive regarding the XPS Document Writer or Print to PDF port conflict?
- Does the error appear during startup, when opening applications, or only when attempting to print?
In the meantime, please try these quick checks:
- Open Control Panel > Programs and Features > Turn Windows features on or off
- Uncheck Microsoft XPS Document Writer and Microsoft Print to PDF, then select OK and restart the computer
- Return to the same window, re-enable both features, and restart again
- Open Settings > Bluetooth & devices > Printers & scanners, and check whether multiple instances of Microsoft Print to PDF or Microsoft XPS Document Writer are listed. If so, let us know what you see
If the answer is helpful, please click "Yes". If you have extra questions about this answer, please click "Comment".
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