⚡ Runtime Error

Fix Permanently R6025 Microsoft Visual C++ Runtime Library Error - Complete Solution Guide

📅 Updated: Apr 15, 2026 ⏱️ 15-30 min read ✅ Verified Solutions

💥 Runtime Error

Error: R6025 - Pure Virtual Function Call

Message: "Microsoft Visual C++ Runtime Library - Runtime Error!"

Impact: Program crashes immediately

Fix Time: 15-30 minutes

Program in use - Skype, game, or design software - suddenly: "Runtime Error! Program: [path] R6025 - pure virtual function call." Application crashes instantly, no warning, no save prompt. Keeps recurring.

R6025 technically programmer error. Means application attempted calling function nonexistent in memory. Plain language: software has bug requesting unavailable resource. Usually results from coding mistakes, corrupted installation, or conflicts between program and system libraries.

Frustrating aspect: end user didn't cause this - developers did. Stuck dealing with consequences. While underlying code bug cannot be fixed by user, CAN work around in most cases by fixing corrupted runtime libraries, updating drivers, or adjusting compatibility settings.

Understanding R6025 Error

"Pure virtual function call" = C++ programming term. When program poorly coded or libraries corrupted, error surfaces.

Common triggers:

  • Corrupted Visual C++ Redistributables - Runtime libraries program needs are damaged
  • Software bugs - Poorly coded program with memory management issues
  • Conflicting software - Two programs attempting to use incompatible versions of same DLL
  • Outdated drivers - Especially graphics drivers for games and design software
  • Windows updates - Sometimes system updates break compatibility with legacy programs
  • Corrupted program installation - Missing or damaged program files

Fix #1: Reinstall Visual C++ Redistributables

Since Visual C++ runtime error, fixing runtime libraries first step.

Visual C++ package reinstallation
  1. Identify installed Visual C++ versions:
    • Control Panel → Programs and Features
    • Look for all "Microsoft Visual C++ ... Redistributable" entries
    • Note which years present (2005, 2008, 2010, 2012, 2013, 2015-2022)
  2. Uninstall Visual C++ packages:
    • Start with newest first (2015-2022, then work backwards)
    • Right-click each → Uninstall
    • Uninstall both x86 (32-bit) and x64 (64-bit) versions
    • Important: Only uninstall one year at a time, then test if R6025 resolved
  3. Download fresh Visual C++ packages:
    • Visit Microsoft official download center
    • Download versions uninstalled
    • For each year, download BOTH x86 and x64 installers
  4. Install in order (oldest to newest):
    • Install 2005 (x86 then x64)
    • Then 2008 (x86 then x64)
    • Then 2010, 2012, 2013, 2015-2022
    • Restart computer after installing all
  5. Test crashing program

Fix #2: Update or Reinstall Problem Program

If software itself buggy or corrupted, system adjustments won't fix it.

Program update process
  1. Check for program updates:
    • Open application (if doesn't crash immediately)
    • Look for Help → Check for Updates or similar
    • Install any available updates
    • Many R6025 errors are known bugs developers patch
  2. If updates don't resolve, reinstall:
    • Control Panel → Programs and Features
    • Find problematic program
    • Uninstall completely
    • Restart computer
  3. Clean leftover files:
    • Navigate to C:\Program Files\ and C:\Program Files (x86)\
    • Delete program folder if still exists
    • Check C:\Users\[YourName]\AppData\Local\ and Roaming\
    • Delete program folders there too
  4. Download fresh installer:
    • Get latest version from official website
    • Run installer as administrator
    • Choose custom installation if available

Fix #3: Update Graphics and System Drivers

Outdated drivers, particularly graphics, frequently cause runtime errors with games and graphics software.

Driver update process
  1. Update graphics drivers:
    • NVIDIA: Download GeForce Experience, use automatic driver update
    • AMD: Download AMD Software, use automatic detection
    • Intel: Visit Intel Driver & Support Assistant page
    • Or manually: Device Manager → Display adapters → Right-click → Update driver
  2. Update other drivers:
    • Device Manager → Look for any devices with yellow exclamation marks
    • Right-click → Update driver → Search automatically
  3. Update Windows:
    • Settings → Update & Security → Windows Update
    • Check for updates
    • Install all available updates
    • Restart computer

Additional Quick Fixes

  • Run as Administrator - Right-click program → Run as administrator. Permissions issues can trigger R6025.
  • Compatibility Mode - Right-click program → Properties → Compatibility → Check "Run this program in compatibility mode" → Select older Windows version.
  • Disable DEP - Control Panel → System → Advanced → Performance Settings → Data Execution Prevention → Add program to exception list.
  • Clean boot - Boot Windows with minimal services to eliminate software conflicts. Search "how to perform clean boot Windows."
  • Check Windows logs - Event Viewer → Windows Logs → Application. Look for crash details, may reveal specific DLL causing issue.

Frequently Asked Questions

Is R6025 virus or malware?

No. Legitimate error from Visual C++ runtime library. However, malware can corrupt system files causing R6025. Run full antivirus scan if suspecting infection.

Why does this happen to specific programs only?

Different programs built with different Visual C++ versions and coding practices. Program with poor memory management more likely to trigger R6025. Not system-wide issue.

Can I just ignore this error?

Not recommended. While data typically not at risk, error indicates underlying problem that may worsen. Plus, crashes prevent program use. Worth fixing.