Rundll32.exe Application Error - How To Resolve It Easily

This guide offers solutions for resolving the rundll32.exe application error in Windows. This error can stem from corrupted files, system conflicts, or malware.

Key Points:

• The rundll32.exe error often arises from corrupted files, system conflicts, or malware.
• Begin troubleshooting by updating Windows and performing a malware scan.
• If problems persist, utilize SFC and DISM tools to repair system files, replace the faulty rundll32.exe file, and explore additional methods detailed below.

Quick Fixes:

Start with these simple steps:

• Update Windows: Navigate to Settings > Windows Update > Check for updates. Download and install any available updates.
• Malware Scan: Access Windows Security (via the search bar) > Virus & threat protection > Scan options > Full scan > Scan now.

Replacing the Corrupted RunDLL File:

If a corrupted rundll32.exe file is the culprit, replacing it with a functional copy from a compatible system can resolve the issue. Ensure the source computer has the same Windows version and architecture (32-bit or 64-bit) as yours (check via Start Menu > Settings > System > About > System type).

1. On the healthy computer, open File Explorer (Windows Key E).
2. Navigate to This PC > Local Disk (C:) > Windows > System32.
3. Copy rundll32.exe to a USB drive or other portable storage.

4. Transfer the copied file to C:WindowsSystem32 on your affected computer. Click "Continue" if prompted for permission.

5. Restart your computer.

Running SFC and DISM Scans:

If replacing the file doesn't work, use the System File Checker (SFC) and Deployment Image Servicing and Management (DISM) tools to repair system file corruption:

1. Press Windows Key X and select Terminal (Admin).

2. Type sfc /scannow and press Enter.

3. After the scan, type DISM /Online /Cleanup-Image /RestoreHealth and press Enter.

4. Restart your computer.

Clearing Browser Cache and Closing Tabs:

If the error occurs during browser use, clearing the cache and closing unnecessary tabs might help:

1. Press Ctrl Shift Del.
2. Select "All time" from the Time Range dropdown.
3. Check "Cookies and other site data" and "Cached images and files." Click "Delete data."

4. Close extra tabs.

System Restore:

As a last resort, System Restore can revert your system to a previous point before the error appeared:

1. Press Windows Key R, type rstrui, and press Enter.

2. Select a restore point before the error and click Next.

3. Click Finish and restart your PC.

Try these solutions sequentially, starting with the simplest. Remember to consult additional resources if needed.

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