How to Set Adobe Reader as Default PDF Viewer with Acrobat Pro Installed
Question details
The user needs to configure a VMware golden image to set Adobe Reader as the default PDF application for most users, while keeping Acrobat Pro installed and accessible for licensed users.

- Product
- Adobe Reader DC / Adobe Acrobat Pro DC
- Device & OS
- Windows / VMware
- Scenario
- Managing enterprise deployments where both Adobe Reader and Acrobat Pro are present on the same system, but the default application needs to be restricted to the free Reader version.
- Observed behavior
- The system lacks a defined default application for PDFs, potentially defaulting to Acrobat Pro or prompting standard users to select a program upon opening a file.
Ensure you have administrative privileges to access the Group Policy Editor or modify enterprise deployment packages, and verify the exact installation paths for both Reader and Acrobat Pro in your environment.
Configure Default PDF Viewer via Group Policy (GPO)
Deploying a default application associations XML file via GPO is the most reliable method to enforce default applications across enterprise environments.
This method uses native Windows management tools to deploy a standardized file association layout, ensuring that all standard users default to Adobe Reader regardless of other installed PDF software.
On a properly configured test machine where Adobe Reader is set as the default PDF viewer, open an elevated Command Prompt and run the command: dism /Online /Export-DefaultAppAssociations:C:\AppAssoc.xml
Open the exported XML file in a text editor. Remove all lines except the one relating to the '.pdf' extension to ensure you are only managing the PDF viewer association.
Place the edited XML file in a shared network location. Open Group Policy Management, navigate to Computer Configuration > Administrative Templates > Windows Components > File Explorer, and enable 'Set a default associations configuration file', pointing it to your XML path.

Use the Acrobat Customization Wizard
Modify the installation package to automatically set Reader as the default viewer during the initial deployment phase.
Looking for a Lighter Enterprise PDF Solution? Try WPS Office
Managing separate free and Pro PDF installations can complicate golden image deployments. WPS Office offers a unified, lightweight PDF reader and editor that eliminates version conflicts, providing robust PDF management in a single application.
- 1. Download WPS Office: Visit the official WPS Office website and download the enterprise deployment package.
- 2. Install on Golden Image: Install WPS Office on your VMware environment, opting to include the built-in PDF component.
- 3. Set as Default: During installation or via Windows Default Apps settings, assign WPS Office as the primary handler for all .pdf extensions.

Frequently Asked Questions
Can both Adobe Reader and Acrobat Pro coexist on the same VMware image?
Yes, both can be installed on the same machine. However, it requires careful configuration via Group Policy or Registry edits to ensure standard users default to Reader instead of Pro.
Why do my users keep getting prompted to choose a PDF viewer?
Windows 10 and 11 often reset default app associations if the configuration is not locked down properly. Utilizing an enterprise AppAssoc.xml file applied through Group Policy prevents these prompts.
Can I use Registry Editor to set the default PDF viewer for current users?
Yes, you can modify the ProgId registry keys under HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\FileExts\.pdf\UserChoice to point to Adobe Reader, though GPO is generally recommended for managing multiple users.




