Word Visual C++ Runtime Error: How to Fix

When you open Word, you see a dialog box that says “Microsoft Visual C++ Runtime Library” or “Runtime Error!” The error message often mentions R6025, pure virtual function call, or a corrupted application state. This error occurs when a required Visual C++ redistributable file is missing, damaged, or incompatible with your version of Office. This article explains why the error happens and provides step-by-step methods to resolve it permanently.

Why Word Displays a Visual C++ Runtime Error

Word relies on Microsoft Visual C++ Redistributable packages to run its core code. These packages contain shared libraries that many Windows programs use. When a redistributable file becomes corrupted, deleted, or mismatched with the version of Office you have installed, Word cannot load the required functions. The result is a runtime error dialog before Word even opens.

Common triggers include:

• Installing or uninstalling other software that overwrites Visual C++ DLLs.
• Windows Update that replaces a redistributable with a newer version that conflicts with Office.
• Antivirus software that quarantines or removes a runtime DLL it incorrectly flags as suspicious.
• A partial or failed Office update that leaves runtime dependencies broken.

Understanding the Error Codes

The most common error codes are R6025 (pure virtual function call) and R6034 (application has caused a runtime error). R6025 usually points to a corrupted Visual C++ library that Office tries to call at startup. R6034 indicates a manifest mismatch — the system cannot find the correct version of the runtime DLL in the side-by-side assembly cache.

Step-by-Step Fixes for the Visual C++ Runtime Error in Word

Follow these methods in the order listed. Each method addresses a different root cause. Test Word after each method before moving to the next.

Method 1: Repair All Installed Visual C++ Redistributables

1. Open Programs and Features
   Press Windows + R, type appwiz.cpl, and press Enter.
2. Locate the Visual C++ Redistributables
   Scroll through the list. Look for entries that begin with “Microsoft Visual C++” followed by a year (2005, 2008, 2010, 2012, 2013, 2015-2022).
3. Repair each redistributable one by one
   Right-click the first entry and select Change. In the setup window, click Repair. Wait for the repair to finish. Repeat for every Visual C++ redistributable on the list.
4. Restart Windows
   After repairing all redistributables, restart your computer. Open Word to test.

Method 2: Run the Microsoft Easy Fix Tool for Office

1. Download the Microsoft Support and Recovery Assistant
   Go to the official Microsoft website and download the Microsoft Support and Recovery Assistant (SaRA) tool.
2. Run the tool and select Office
   Open SaRA. Click Office and then I have Office installed but I cannot open it.
3. Follow the on-screen prompts
   The tool scans for missing or corrupted Visual C++ components and attempts to fix them automatically. It may also repair the Office installation if needed.
4. Restart and test Word
   When the tool finishes, restart your computer and open Word.

Method 3: Run System File Checker (SFC)

1. Open Command Prompt as administrator
   Press Windows + X and select Terminal (Admin) or Command Prompt (Admin).
2. Run the SFC scan
   Type sfc /scannow and press Enter. The scan takes 10 to 20 minutes.
3. Review the results
   If SFC finds corrupted files it cannot repair, run DISM /Online /Cleanup-Image /RestoreHealth in the same terminal, then run sfc /scannow again.
4. Restart and test Word
   After the scan completes, restart Windows and open Word.

Method 4: Perform a Quick Repair of Microsoft 365 or Office

1. Open Programs and Features
   Press Windows + R, type appwiz.cpl, and press Enter.
2. Locate your Microsoft 365 or Office installation
   Find the entry for Microsoft 365 or Microsoft Office. Right-click it and select Change.
3. Choose Quick Repair
   Select Quick Repair (not Online Repair) and click Repair. This option does not require an internet connection and finishes in a few minutes.
4. Restart and test Word
   After the repair, restart your computer and open Word.

If Word Still Shows a Runtime Error After the Fixes

Word Opens but Crashes Immediately After the Runtime Dialog

If the runtime error appears and Word closes right away, a single add-in may be triggering the conflict. Start Word in Safe Mode by pressing Ctrl and double-clicking the Word shortcut. If Word opens without error in Safe Mode, disable all add-ins via File > Options > Add-Ins > Manage COM Add-ins > Go. Restart Word normally and enable add-ins one at a time to find the culprit.

Runtime Error Only Occurs With a Specific Document

A corrupted document can trigger a Visual C++ runtime error even when the runtime files are healthy. Open Word in Safe Mode, then use File > Open > Browse. Select the problematic file, click the down arrow next to the Open button, and choose Open and Repair. If that fails, copy the content into a new blank document.

Error Returns After Windows Update

A Windows Update may have replaced a Visual C++ redistributable with a version that does not match Office. Uninstall all Visual C++ redistributables from Programs and Features, then download and install the latest Visual C++ 2015-2022 Redistributable package (both x86 and x64) from Microsoft’s official site. Reinstall Office afterward if needed.

Visual C++ Runtime Repair Methods Compared

Method	Scope	Time Required
Repair Visual C++ Redistributables	Fixes corrupted runtime files	10 to 20 minutes
Microsoft SaRA Tool	Automated detection and fix of Office-related runtime issues	5 to 15 minutes
System File Checker (SFC)	Restores Windows system files that affect runtime loading	10 to 30 minutes
Quick Repair of Office	Replaces Office program files without affecting data	5 to 10 minutes

The Visual C++ runtime error in Word is caused by damaged or missing redistributable files that Word needs to start. Repairing the redistributables or running the Microsoft SaRA tool resolves the majority of cases. If the error persists, use System File Checker and a Quick Repair of Office. As a final step, uninstall all Visual C++ packages and reinstall the latest version from Microsoft to ensure a clean match with your Office installation.