PDF Conversion Issues

How to Fix Acrobat PDFMaker Unexpected Error When Converting Word Files

Khadija KhanKhadija Khan Oct 28, 2026 869 views

Question details

Users are encountering an unexpected error when attempting to convert Word documents to PDF via Adobe Acrobat PDFMaker.

How to Fix Acrobat PDFMaker Unexpected Error When Converting Word Files
Product
Adobe Acrobat PDFMaker and Microsoft Word
Device & OS
Windows
Scenario
Converting Word files to PDF using the right-click context menu or the Acrobat Combine Files tool.
Observed behavior
PDFMaker fails to create the PDF file, displaying the message 'An unexpected error occurred. PDFMaker was unable to produce the Adobe PDF.' The WINWORD.EXE process may also remain stuck running in the background.
Before you start

Ensure that your Adobe Acrobat and Microsoft Office installations are fully updated, as running unsupported legacy versions (like Acrobat XI) commonly triggers compatibility errors.

Solution 1Recommended

End Background Word Processes and Retry

Terminate stuck Microsoft Word background tasks that may be locking the document and blocking the PDF conversion.

When a previous conversion fails, the WINWORD.EXE background process often remains active. This locks the file and prevents PDFMaker from executing subsequent conversion requests properly.

1
Open Task Manager

Press Ctrl + Shift + Esc on your keyboard, or right-click the Windows taskbar and select 'Task Manager'.

2
Locate the WINWORD.EXE process

Navigate to the 'Processes' or 'Details' tab and scroll down to find 'WINWORD.EXE' or 'Microsoft Word'.

3
End the task

Right-click the WINWORD.EXE process and select 'End Task' to force it to close.

4
Retry the PDF conversion

Restart Microsoft Word and Adobe Acrobat, then attempt to convert your document to PDF again.

End Background Word Processes and Retry
Process Cleared: Closing stuck background processes is often the fastest way to resolve file locking issues instantly.
Built-in PDF Converter

Convert Word to PDF Seamlessly with WPS Office

Skip the complicated add-in troubleshooting. WPS Office features a built-in, native PDF converter that transforms your Word documents into high-quality PDFs instantly, completely bypassing external PDFMaker errors.

  1. 1. Open your document in WPS Office: Launch WPS Office and open the Word document you wish to convert.
  2. 2. Access the Export tool: Click on the 'Menu' button in the top left corner, then select 'Export to PDF' from the dropdown list.
  3. 3. Configure PDF settings: Adjust your preferred export settings, such as page range and save destination.
  4. 4. Complete the conversion: Click the 'Export to PDF' button to instantly create and save your new PDF file.
Seamlessly converts .doc and .docx files to PDF without external plugins or add-ins.Highly compatible with all Microsoft Office document formats.Lightweight architecture prevents background process freezing.Free and intuitive interface with familiar word processing tools.
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Frequently Asked Questions

Why does the PDFMaker error mention WINWORD.EXE?

PDFMaker relies on Microsoft Word's background process (WINWORD.EXE) to render the document before conversion. If the process crashes or gets stuck, the integration fails and triggers the 'unexpected error' message.

How can I re-enable the Acrobat PDFMaker add-in if it disappeared from Word?

In Microsoft Word, go to File > Options > Add-ins. Select 'COM Add-ins' from the Manage dropdown menu at the bottom and click 'Go'. Check the box next to 'Acrobat PDFMaker Office COM Addin' and click OK to re-enable it.

Is Adobe Acrobat XI still supported for Word to PDF conversions?

No, Acrobat XI has reached its end of support. It no longer receives security patches or functional updates, making it highly susceptible to errors when interacting with newer versions of Microsoft Office or Windows.

Are there alternative ways to convert Word to PDF without PDFMaker?

Yes. You can use the native 'Save As' or 'Export' feature directly inside Microsoft Word to save the document as a PDF, or use a comprehensive alternative like WPS Office which provides built-in PDF conversion capabilities natively.