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How to Fix Cannot Open Embedded PDF in Word After Adobe 64-bit Upgrade

John WilsonJohn Wilson Sep 28, 2026 872 views

Question details

The user is unable to open a PDF file that is embedded as an object in a Microsoft Word document after upgrading Adobe Acrobat Reader to a 64-bit version.

Cannot Open Embedded PDF in Word After Adobe Acrobat Upgrade
Product
Microsoft Word, Adobe Acrobat Reader
Device & OS
Windows
Scenario
Attempting to open, view, or interact with a PDF file that has been embedded into an existing Word document.
Observed behavior
Double-clicking the embedded PDF fails to launch the file. Changing the default PDF application and attempting to save the PDF locally do not resolve the error.
Before you start

Ensure that your Windows operating system is fully updated and restart your computer to apply any pending registry changes from the Adobe Acrobat upgrade before proceeding.

Solution 1Recommended

Repair or Reinstall Adobe Acrobat Reader

Repairing the Adobe installation can resolve OLE registry errors (such as AcroExch issues) caused during the transition from the 32-bit to the 64-bit version.

Upgrading the software architecture can sometimes orphan legacy Windows Registry keys. As a result, Microsoft Word looks for the old 32-bit application path to open the object, which no longer exists.

1
Open Windows Control Panel

Press the Windows key, type 'Control Panel', and press Enter. Navigate to 'Programs' and select 'Programs and Features'.

2
Repair Adobe Acrobat

Locate Adobe Acrobat Reader in the installed programs list, right-click it, and select 'Change' or 'Repair'. Follow the on-screen prompts to complete the repair process, then restart your PC.

3
Reinstall if necessary

If repairing does not work, return to Programs and Features, uninstall Adobe Acrobat entirely, reboot your system, and download a fresh 64-bit installer from the official Adobe website.

Repair or Reinstall Adobe Acrobat Reader
Registry Updates: A clean installation forces Windows to rewrite the AcroExch registry keys, restoring the link between embedded Word objects and the Adobe software.
Free Microsoft Office alternative

Open Embedded PDFs Seamlessly with WPS Office

If Microsoft Word continues to struggle with OLE objects and Adobe registry errors, consider switching to WPS Office. It provides a lightweight, highly compatible alternative with built-in PDF tools, bypassing the need for complex third-party registry integrations entirely.

  1. 1. Install WPS Office: Download and install WPS Office for free from the official website.
  2. 2. Open the Document: Open your Word document containing the embedded PDF using WPS Writer.
  3. 3. View the PDF: Double-click the embedded PDF object to open it instantly via WPS Office's built-in PDF viewer.
Fully compatible with Microsoft Word (.docx) formats and embedded objects.Built-in PDF reader eliminates reliance on external PDF software like Adobe Acrobat.Free, lightweight, and uses significantly fewer system resources.Familiar user interface for a seamless migration from Microsoft Office.
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Frequently Asked Questions

Why does upgrading to 64-bit Adobe Acrobat break embedded PDFs in Word?

Upgrading to a 64-bit architecture can leave behind outdated 32-bit registry keys (specifically AcroExch OLE settings). Word may still try to access the old 32-bit application path, which no longer exists, causing the launch to fail.

Can I just change the default PDF app in Windows to fix this error?

No. Changing the default PDF app in Windows settings usually only affects standalone PDF files. Embedded objects rely on OLE (Object Linking and Embedding) registry keys, which are not automatically corrected by simply switching the default application.

What does the 'AcroExch' error mean in Microsoft Word?

AcroExch is the programmatic identifier for Adobe Acrobat objects. If an error mentions this term, it means the Windows registry mapping that seamlessly connects Microsoft Word to Adobe Acrobat is corrupted or missing.

How do I recover the data from the embedded PDF if it won't open?

You can often extract the file by saving a copy of the Word document, changing its file extension from .docx to .zip, and extracting the folder. Navigate to the 'word/embeddings' folder inside the unzipped directory to find your raw PDF file.