Printing Problems

How to Fix Word Mail Merge Font Errors When Exporting to PDF

Natalie Taylor Sep 27, 2026 870 views

Question details

Users experience a font-related error when attempting to print a mail-merged document to Adobe PDF, specifically when using downloaded fonts like Open Sans.

How to Fix Word Mail Merge Font Errors When Exporting to PDF

Product: Microsoft Word, Adobe PDF
Device & OS: not provided
Scenario: Exporting or printing a completed mail merge document to PDF format.
Observed behavior: The export process fails or triggers a font-related error during printing via the Adobe PDF printer, even if the font is embedded or changed.

Before you start

Verify that your Microsoft Word application is up to date and take note of the exact error message provided by the Adobe PDF printer, as this helps narrow down the conflict.

Solution 1Recommended

Use Word's Built-in Export to PDF Feature

Bypassing the Adobe PDF printer and using Microsoft Word's native PDF export tool is the most reliable way to prevent third-party print spooler and font conflicts.

When you print using the 'Adobe PDF' option, the document passes through a third-party print driver which can sometimes mishandle embedded web fonts like Open Sans. Word's native export engine handles its own font rendering directly.

Complete your Mail Merge

Navigate to the Mailings tab and click 'Finish & Merge', then select 'Edit Individual Documents' to generate your final merged document.

Access the Export menu

In the newly created merged document, click on the 'File' tab in the top-left corner and select 'Export' from the left-hand sidebar.

Create the PDF

Click on the 'Create PDF/XPS Document' button. Choose your save location, ensure 'Optimize for: Standard' is selected, and click 'Publish'.

Use Word's Built-in Export to PDF Feature

Native Export Success: Using the native export feature often preserves formatting and embeds custom fonts perfectly without triggering Adobe print driver errors.

Solution 2

Test Mail Merge with Standard Built-in Fonts

Custom or downloaded fonts like Open Sans can occasionally corrupt the print spooling process. Testing with a standard system font isolates the root cause.

Solution 3

Utilize a Third-Party Mail Merge Add-in

If you require advanced PDF exporting features (like separating merged records into individual PDF files), a dedicated third-party add-in can bypass the default print errors.

Perform Mail Merge and Export to PDF Seamlessly in WPS Writer

WPS Writer offers a seamless Mail Merge feature with a highly stable, built-in PDF export capability. By using WPS Office, you bypass the need for external Adobe print drivers, virtually eliminating frustrating font rendering errors when handling large merged documents.

1. Open Mail Merge: Launch WPS Writer, open your template document, navigate to the 'References' tab, and click on 'Mail Merge'.
2. Connect Data Source: Click 'Open Data Source' to link your recipient list, such as a WPS Spreadsheet or Excel file.
3. Generate Document: Insert your merge fields, then click 'Merge to New Document' to generate the finalized letters or labels.
4. Export Natively: Click the 'Menu' button in the top left corner, select 'Export to PDF', and save your document with all fonts perfectly preserved.

Highly compatible with Microsoft Word (.docx) formats and Excel data sourcesNative 'Export to PDF' converter requires no Adobe pluginsFlawless font rendering for custom fonts like Open Sans during document exportFree and lightweight Office suite for everyday tasks

Frequently Asked Questions

Why does the Open Sans font fail when exporting a Word mail merge to PDF?

Non-standard or downloaded web fonts like Open Sans can sometimes fail to embed correctly when passing through third-party PDF virtual printers like Adobe. The print driver may struggle to parse the font's licensing restrictions or file format, resulting in an error.

Can I merge records into individual PDF files natively in Word?

Microsoft Word's native Mail Merge feature generates a single document containing all records. To separate them into individual PDF files, you typically need to use a VBA macro or install a third-party mail merge add-in.

Does embedding fonts in Word fix the Adobe PDF printing error?

Sometimes. You can try going to File > Options > Save and checking 'Embed fonts in the file'. However, if the error is caused by a conflict within the Adobe print driver itself, the built-in 'Export to PDF' method is a more reliable workaround.

How do I access Word's native PDF export feature?

Click on File in the top ribbon, select Export from the sidebar, and choose 'Create PDF/XPS Document'. This bypasses the standard Print menu entirely and utilizes Microsoft's own PDF conversion engine.

Document & File Issues