PDF Opening Issues

Fix Acrobat X Pro Not Compatible with macOS Catalina

Olivia MillerOlivia Miller Nov 3, 2026 869 views

Question details

The user is unable to launch Adobe Acrobat X Pro after upgrading to macOS Catalina and is looking for a way to view and edit PDFs without having to purchase a new application subscription.

How to Fix Acrobat X Pro Not Compatible with macOS Catalina
Product
Adobe Acrobat X Pro
Device & OS
macOS 10.15.5 Catalina
Scenario
Attempting to open or edit PDF files using an older, pre-purchased version of Adobe Acrobat on a recently updated Mac.
Observed behavior
An update-required error message appears, and Acrobat X Pro refuses to launch because the Catalina operating system has completely dropped support for 32-bit applications.
Before you start

Before exploring system workarounds or software alternatives, check the Apple menu to confirm your exact macOS version and ensure your important PDF documents are safely backed up to an external drive.

Solution 1Recommended

Use Apple Preview for Basic PDF Viewing

Leverage the native Preview application built into macOS to view and perform basic annotations on PDF files without spending money.

If you only need to read documents, highlight text, or fill out basic forms, macOS already has a built-in 64-bit tool that works perfectly on Catalina and beyond.

1
Locate your PDF file

Open Finder and navigate to the folder containing the PDF document you want to open.

2
Open with Preview

Right-click (or Control-click) the file, hover over 'Open With' in the context menu, and select 'Preview'.

3
Annotate and save

Use the Markup Toolbar in Preview to highlight text, add shapes, or insert your signature, then go to 'File' and select 'Save'.

Use Apple Preview for Basic PDF Viewing
Cost-Effective Alternative: Using Apple Preview eliminates the immediate need to purchase new software while retaining core reading and signing functionalities.
Free Microsoft Office alternative

A Powerful and Free PDF Alternative for macOS Catalina

Instead of paying for a costly Adobe Acrobat upgrade or erasing your hard drive to downgrade macOS, switch to WPS Office. It provides a comprehensive, native 64-bit PDF toolkit that fully supports macOS Catalina and newer operating systems for free.

  1. 1. Download the Mac version: Visit the official WPS Office website and download the free installer specifically designed for macOS.
  2. 2. Install the suite: Open the downloaded .dmg file and drag the WPS Office application icon into your Applications folder.
  3. 3. Open your PDF: Launch WPS Office, click on the dedicated 'PDF' tab on the home screen, and open your file to start reading and editing.
Native 64-bit compatibility for flawless performance on modern macOS versions.Powerful built-in PDF editor to view, annotate, merge, and convert documents easily.Excellent format compatibility with Adobe PDF and Microsoft Office files.Lightweight application design that won't consume massive system resources.All-in-one workspace that seamlessly combines PDF management with Word, Excel, and PowerPoint alternatives.
microsoft office alternative - wps office

Frequently Asked Questions

Why did Acrobat X Pro stop working immediately after I updated to macOS Catalina?

macOS Catalina (version 10.15) entirely dropped support for 32-bit applications. Because Acrobat X Pro is older software built on a 32-bit architecture, the new operating system is fundamentally unable to launch or process the application.

Can I upgrade my Acrobat X Pro to a 64-bit version for free?

No. Acrobat X Pro reached its end-of-life status years ago and does not qualify for free upgrades to modern software. You would need to purchase a completely new subscription for Adobe Acrobat Pro DC to get a 64-bit version.

Are there any free native Mac applications that can replace basic Acrobat features?

Yes, Apple's built-in Preview app can handle basic PDF viewing, highlighting, form filling, and signing natively on macOS Catalina. For more advanced features without a subscription, suites like WPS Office offer excellent built-in PDF toolkits.