PDF Opening Issues

Does Adobe Acrobat 9 Work with macOS Catalina?

Huma Ashraf ChHuma Ashraf Ch Nov 2, 2026 869 views

Question details

The user is inquiring about the compatibility of Adobe Acrobat 9 Professional with macOS 10.15 Catalina and how to proceed if it is unsupported.

Does Adobe Acrobat 9 Work with macOS Catalina?
Product
Adobe Acrobat 9 Professional
Device & OS
macOS 10.15 Catalina
Scenario
Upgrading the Mac operating system to Catalina while relying on an older version of Acrobat for PDF management.
Observed behavior
Acrobat 9 fails to launch or install because macOS Catalina restricts application execution exclusively to 64-bit software.
Before you start

Verify your current macOS version by clicking the Apple menu and selecting 'About This Mac' to confirm if you are running Catalina (10.15) or a newer release.

Solution 1Recommended

Upgrade to a 64-Bit PDF Application

Since macOS Catalina no longer supports 32-bit applications like Acrobat 9, upgrading to a 64-bit application is the most secure and reliable method to manage PDFs.

Apple fully transitioned to 64-bit technology with macOS 10.15 Catalina. Acrobat 9 was originally designed for Mac OS X 10.4 and 10.5, utilizing a 32-bit architecture that cannot execute on newer macOS versions. You must migrate to updated software to continue working with your documents.

1
Identify 32-bit applications

Before upgrading macOS, check your system for legacy 32-bit apps. Go to Apple Menu > About This Mac > System Report > Applications and review the 64-bit column.

2
Uninstall Acrobat 9

Remove Adobe Acrobat 9 Professional from your Applications folder, as leaving non-functional software can clutter your system.

3
Install a compatible PDF editor

Download and install a 64-bit compatible PDF editor, such as Acrobat DC or a modern 64-bit alternative, to restore your document workflow natively on Catalina.

Upgrade to a 64-Bit PDF Application
Document Safety: Your PDF files are universally formatted documents. Upgrading your software or uninstalling Acrobat 9 will not delete or alter your existing PDF files.
Mac-Compatible PDF Editor

Use WPS Office to Open and Edit PDFs on macOS Catalina

WPS Office is fully optimized for modern macOS versions, offering seamless 64-bit compatibility. Its built-in PDF toolkit allows you to read, edit, annotate, and manage PDF documents easily on macOS Catalina without needing outdated 32-bit software.

  1. 1. Download WPS Office for Mac: Visit the official WPS website and download the latest Mac version of WPS Office.
  2. 2. Install the Application: Open the downloaded installer package and drag the WPS Office icon into your Mac's Applications folder.
  3. 3. Access the PDF Tools: Launch WPS Office and click on the 'PDF' tab on the home screen to access the dedicated PDF toolkit.
  4. 4. Open Your Document: Click 'Open' and select the PDF file you previously managed with Acrobat 9 to seamlessly resume your work.
Native 64-bit architecture tailored for macOS Catalina and newer versionsBuilt-in PDF editor for reading, annotating, and editing text effortlesslyFull compatibility with standard PDF formats and Microsoft Office filesLightweight, secure, and receives regular performance updates for Mac
microsoft office alternative - wps office

Frequently Asked Questions

Why does macOS Catalina block 32-bit applications like Acrobat 9?

Apple removed 32-bit application support in macOS Catalina to transition entirely to 64-bit architecture. This change improves overall system performance, security, and memory efficiency, but it renders older 32-bit apps unusable.

Can I force Acrobat 9 to run on macOS Catalina?

No, there is no built-in workaround to natively force a 32-bit application to run on macOS Catalina. You must either use a virtual machine running an older operating system or switch to a modern 64-bit PDF application.

Is there a built-in tool on macOS Catalina to read my PDFs?

Yes, macOS includes a native application called Preview. You can use Preview to open, read, and add basic highlights or signatures to your PDF files if you no longer have access to Adobe Acrobat 9.

Will my existing PDF files be deleted or corrupted if Acrobat 9 stops working?

No, your PDF files are standard documents and will not be affected by the software incompatibility. They remain safely stored on your Mac's hard drive and can be opened by any compatible 64-bit PDF reader or editor.