Encountering the ERROR_404 system error code on your Windows computer can be frustrating, especially when you rely on your system for work, study, or entertainment. This error typically means that something essential your system or an application is trying to access is missing or unavailable. Don’t worry! In this detailed, easy-to-follow guide, I’ll walk you through practical steps to fix the ERROR_404 issue and get your system back on track—whether you are a beginner or a tech-savvy user.
What is ERROR_404 in Windows?
Most people recognize the “404 error” as a web page error (Page Not Found), but in the context of your Windows system, ERROR_404 can indicate a similar "not found" problem, usually caused by missing files, corrupted system resources, or misconfigured settings. This can happen during software installation, driver updates, or even when accessing certain system features.
Why Fixing ERROR_404 Is Important
Ignoring this error can lead to:
- Applications not working properly
- System instability or crashes
- Inability to access key Windows features
Fixing it ensures your computer runs smoothly and safely.
Step-by-Step Guide to Fix ERROR_404 on Windows
Step 1: Restart Your Computer
Sometimes, a simple reboot can solve temporary glitches causing the ERROR_404.
- Click Start > Power > Restart.
- Once restarted, check if the problem persists.
If the issue is still there, move on to Step 2.
Step 2: Run the Windows Update Troubleshooter
Many times, missing Windows files that cause ERROR_404 are resolved through updates.
- Go to Settings > Update & Security > Troubleshoot > Additional troubleshooters.
- Select Windows Update and click Run the troubleshooter.
- Follow the prompts and apply any fixes suggested.
- Restart your PC and check if the issue is resolved.
Step 3: Use System File Checker (SFC) to Repair Corrupted Files
Corrupted system files often cause ERROR_404. The SFC tool scans and repairs these files.
- Press
Windows + S, type cmd, right-click Command Prompt, and select Run as administrator. -
Type the following command and press Enter:
sfc /scannow
- Wait for the scan and repair process to complete.
- Reboot your system and verify if ERROR_404 has disappeared.
Step 4: Run DISM to Fix System Image Corruption
If SFC doesn’t fix the issue, DISM (Deployment Image Servicing and Management) can help repair system images.
- Open the Command Prompt as administrator (same as in Step 3).
-
Enter the following commands one by one, waiting for each to complete:
DISM /Online /Cleanup-Image /CheckHealth
DISM /Online /Cleanup-Image /ScanHealth
DISM /Online /Cleanup-Image /RestoreHealth - When done, restart your computer and check for the error.
Step 5: Check and Repair Disk Errors Using CHKDSK
Sometimes, disk errors cause files to become inaccessible, resulting in ERROR_404.
- Open Command Prompt as administrator.
-
Type this command and press Enter:
chkdsk C: /f /r /x
Replace "C:" with the drive where Windows is installed if different.
- You may be asked to schedule a scan on next restart—type Y and reboot your PC.
- The system will check the disk and fix any detected errors.
Step 6: Reset or Reinstall the Problematic Application
If the error happens when opening a specific program:
- Go to Settings > Apps > Apps & features.
- Find the problematic app and select Advanced options.
- Choose Reset. If not available, uninstall and reinstall the app from the Microsoft Store or the official website.
Step 7: Scan for Malware and Viruses
Malicious software can cause unexpected errors.
- Open Windows Security from Start menu.
- Go to Virus & threat protection > Quick scan.
- If threats are detected, follow the instructions to quarantine or remove them.
- Perform a full scan for better results if the error continues.
Step 8: Perform a System Restore (If Applicable)
If the ERROR_404 started recently, restoring your PC to an earlier working state can help.
- Type System Restore in the Start menu and select Create a restore point.
- Click System Restore, follow prompts to select a restore point dated before the error appeared.
- Confirm and allow the process to finish, then check if the error is gone.
Step 9: Update Device Drivers
Outdated or corrupted drivers can lead to system errors.
- Press
Windows + Xand choose Device Manager. - Look for devices with warning signs.
- Right-click the device and select Update driver.
- Select Search automatically for updated driver software.
- Restart after updates are installed.
Step 10: Seek Professional Help if All Else Fails
If none of these steps work, the error might be due to deeper system issues or hardware faults. It’s a good idea to:
- Contact Microsoft Support
- Visit a trusted computer repair professional
Final Thoughts
Fixing the ERROR_404 system error code in Windows doesn’t have to be scary or complicated. With patience and these step-by-step instructions, you can troubleshoot and solve the problem like a pro.
Remember: frequent system maintenance—like keeping Windows updated, running scans, and backing up your data—goes a long way in avoiding errors and protecting your PC.
If this guide helped you, share it with friends and family who might face similar troubles, and feel free to ask questions in the comments section. Happy computing!
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If you need a printable checklist or further assistance, just let me know!
