Other PDF Issues

How to Fix Acrobat Pro X Memory Errors on Windows 10

Camila MilosovichCamila Milosovich Oct 28, 2026 869 views

Question details

The user is experiencing memory-related error messages and performance issues when running Acrobat Pro X on Windows 10.

How to Fix Acrobat Pro X Memory Errors on Windows 10
Product
Adobe Acrobat Pro X
Device & OS
Windows 10 Version 1803
Scenario
Opening, viewing, or editing PDF documents in an older 32-bit PDF application on a modern operating system.
Observed behavior
The application displays memory-related error messages, often associated with performance preferences, and may fail to load large files due to hitting the 32-bit memory limit.
Before you start

Verify the exact error message and check the size of the PDF file you are trying to open. Keep in mind that older 32-bit applications have a strict 2 GB memory limit, which can easily be exceeded by complex documents on modern systems.

Solution 1Recommended

Upgrade to a Modern, Supported PDF Application

Since Acrobat X is obsolete and incompatible with modern Windows 10 versions, upgrading to a 64-bit supported application is the most reliable way to prevent memory crashes.

Acrobat Pro X is an outdated 32-bit application that is no longer supported by Adobe. Because it is limited to a maximum of 2 GB of memory access, registry workarounds and performance preference tweaks will not permanently resolve the issue on modern systems like Windows 10 version 1803.

1
Uninstall the obsolete software

Navigate to Windows Settings > Apps, find Adobe Acrobat Pro X in your installed programs list, and click 'Uninstall' to remove the unsupported application.

2
Select a modern PDF alternative

Choose a modern, 64-bit PDF reader or editor that is fully compatible and optimized for Windows 10, such as WPS Office or a current version of Adobe Acrobat.

3
Install and set as default

Download the new software, follow the installation prompts, and set it as your default PDF viewer by right-clicking any PDF file, selecting 'Open with', and checking 'Always use this app'.

Upgrade to a Modern, Supported PDF Application
Permanent Solution: Upgrading to a 64-bit application permanently removes the 2 GB memory ceiling, allowing you to open large and complex PDF files without crashing.
Free Microsoft Office alternative

Resolve PDF Memory Errors Seamlessly with WPS Office

If you are struggling with outdated 32-bit software crashing on Windows 10, it is time to upgrade. WPS Office provides a modern, lightweight, and highly compatible PDF reader and editor that handles large files smoothly without memory limits. Enjoy a fast, familiar interface for all your document needs without the high subscription costs.

  1. 1. Download and Install WPS Office: Get the free WPS Office suite from the official website and run the installer.
  2. 2. Open WPS PDF: Launch the application and select the PDF tool from the home screen.
  3. 3. Load your documents: Drag and drop your large PDF files into the workspace to read and edit them without memory errors.
Handles large and complex PDF files effortlessly without 32-bit memory limitsFully compatible with standard PDF formats and Microsoft Office filesLightweight architecture ensures fast and smooth performance on Windows 10 and 11Includes powerful PDF editing, converting, merging, and signing tools
microsoft office alternative - wps office

Frequently Asked Questions

Why does Acrobat Pro X show an 'out of memory' error when my PC has plenty of RAM?

Acrobat Pro X is a 32-bit application, meaning it can only access a maximum of 2 GB of memory, regardless of how much physical RAM is installed on your computer. Complex or large PDFs can easily hit this software-imposed ceiling.

Can I fix the memory error by changing performance preferences in Acrobat?

While adjusting performance preferences, such as modifying the memory cache settings, might temporarily alleviate minor issues, it will not permanently bypass the architectural 32-bit memory limits of this obsolete software on Windows 10.

Is Acrobat Pro X fully compatible with Windows 10?

No, Acrobat Pro X is an outdated product that reached its end of support long before modern versions of Windows 10 were released. It is not officially supported or optimized for Windows 10 version 1803 or newer.

Will Windows registry workarounds solve the 32-bit memory limit?

Registry tweaks cannot increase the hard 2 GB memory limit inherently imposed on 32-bit applications. The only permanent and reliable solution is upgrading to a 64-bit, supported PDF application.