How to Fix Adobe Acrobat 9 Pro Crashing on Startup in Windows 7
Question details
The user is experiencing recurring application crashes when trying to open PDF files using an older version of Adobe Acrobat.

- Product
- Adobe Acrobat 9 Pro
- Device & OS
- Windows 7
- Scenario
- Starting the Adobe Acrobat application or attempting to open any PDF document.
- Observed behavior
- The application immediately closes and triggers an APPCRASH error for Acrobat.exe, displaying exception code c0000374.
Verify that you have administrative access to your Windows 7 computer and locate your original software installation media or license key before attempting any application repairs.
Update and Repair the Acrobat Installation
Installing the latest available patches for version 9 and running the built-in repair tool can fix corrupted files causing the c0000374 exception.
Exception code c0000374 generally points to a heap corruption issue. Running the internal repair utility can restore critical application files that have become corrupted or compromised.
Open Adobe Acrobat 9 Pro directly from the Start menu without double-clicking a PDF file, as this may allow the program to stay open long enough to perform maintenance.
Navigate to 'Help' in the top menu bar and click 'Check for Updates'. Download and install any final patches released for version 9.
Go back to the 'Help' menu and select 'Repair Acrobat Installation'. Follow the on-screen wizard to verify and fix the software files.
Once the repair and update processes are completely finished, restart your Windows 7 machine and attempt to open a PDF document again.

Test with a New Windows User Profile
Creating a fresh user profile helps determine if the APPCRASH is being caused by corrupted user-specific registry keys or application data.
Open and Edit PDFs Seamlessly with WPS Office
Since Adobe Acrobat 9 is unsupported and prone to crashes, switching to WPS Office provides a stable, modern, and lightweight solution to view, edit, and manage all your PDF files without errors.
- 1. Download the Installer: Visit the official WPS website and download the free WPS Office installation file to your Windows PC.
- 2. Install the Software: Run the downloaded file and follow the quick on-screen instructions to complete the setup.
- 3. Set as Default PDF Reader: Right-click any PDF file, select 'Open with', choose WPS Office, and check the box to always use this application. Your PDFs will now open instantly.

Frequently Asked Questions
Why does Adobe Acrobat 9 Pro show exception code c0000374?
Exception code c0000374 indicates a heap corruption issue within Windows. This occurs when an outdated application like Acrobat 9 has conflicting memory allocations, often triggered by corrupted application files, incompatible third-party plugins, or unsupported system updates.
Can I still get official support from Adobe for Acrobat 9?
No, Adobe Acrobat 9 is an obsolete software version and has reached its end-of-life. Adobe no longer provides security patches, bug fixes, or technical support for this version.
Will reinstalling the application permanently fix the startup crash?
Reinstalling might temporarily resolve the APPCRASH if the issue was caused by a missing or corrupted local file. However, because the software is highly outdated, inherent compatibility problems with Windows 7 could cause the crash to return over time.




