How to Fix Acrobat Installation Error C131 Conflict with Microsoft Word
Question details
The user needs to resolve Adobe Acrobat DC installation error C131 caused by an active background process of Microsoft Word.

- Product
- Adobe Acrobat and Microsoft Word
- Device & OS
- Windows
- Scenario
- Installing or updating Adobe Acrobat DC on a computer that has Microsoft Office installed.
- Observed behavior
- The Adobe installer halts and displays Error C131, indicating a conflict with Microsoft Word, even when the Word application interface is visibly closed.
Ensure you have saved all ongoing work in other applications and have administrative privileges on your Windows computer before attempting to force-close system processes.
Force Close Background Processes via Task Manager
Use the Windows Task Manager to manually terminate hidden Microsoft Word and Adobe installer background processes that are causing the conflict.
Even when an application appears closed, its background processes may still run to handle tasks like syncing or auto-updating. Force closing these ensures the Acrobat installer has unhindered access.
Press Ctrl + Shift + Esc on your keyboard simultaneously, or right-click the Windows taskbar and select "Task Manager".
Navigate to the "Processes" or "Details" tab. Scroll down to look for any processes named "Microsoft Word", "winword.exe", "Acrobat", or related Adobe installers.
Right-click each conflicting process and select "End task" to force them to close completely.
Restart your computer to clear any lingering background cache, then run the Adobe Acrobat installation file again.

Repair the Microsoft Office Installation
If force-closing processes does not work, repairing the Office installation can resolve deep-rooted system conflicts blocking Acrobat.
Avoid Word and PDF Software Conflicts with WPS Office
Tired of dealing with complicated software conflicts, background errors, and tricky installations? WPS Office is a lightweight, all-in-one suite that perfectly integrates Word processing, Spreadsheets, Presentations, and PDF editing in a single seamless application.
- 1. Download the App: Visit the official WPS Office website to download the lightweight, free installer.
- 2. Install and Launch: Run the installer—which installs quickly without complex external dependencies—and open the unified dashboard.
- 3. Manage Documents Effortlessly: Open your Microsoft Word files and PDFs in the same window, avoiding the hassle of juggling multiple heavy applications.

Frequently Asked Questions
Why does Microsoft Word run in the background when the app is closed?
Word can sometimes remain active in the background due to third-party add-ins, document indexing services, or background sync features (like OneDrive) failing to terminate properly. This hidden state causes the Adobe installer to detect a conflict.
Can I install Adobe Acrobat without closing Microsoft Word?
No. Adobe Acrobat installs essential macro plugins and PDF creation add-ins directly into Microsoft Word during the setup process. Word must be completely closed to allow these add-ins to integrate successfully.
What should I do if Task Manager doesn't show Microsoft Word running?
Even if Word isn't visibly listed under active applications at the top of Task Manager, look further down under the 'Background processes' section for 'winword.exe'. If you still cannot find it, performing a standard PC restart will automatically clear hidden processes.




