If you’ve recently encountered Windows System Error Code ERROR_256, you’re not alone. This error can occur due to a variety of reasons, such as corrupted system files, incompatible software, or hardware conflicts. In this comprehensive step-by-step guide, we’ll walk you through practical solutions to fix ERROR_256 on your Windows PC. Let’s get your system back to working smoothly!
What Is Windows System Error Code ERROR_256?
Before diving into the fixes, it’s helpful to understand what this error means. ERROR_256 typically indicates an internal problem with the system’s process execution—often reflecting an invalid or unexpected return status in system or application processes. This error can cause apps or system functions to malfunction or prevent proper operation.
Step 1: Restart Your Computer
It might sound simple, but many Windows errors resolve themselves with a fresh reboot. Restarting clears your system memory and reloads essential processes, which could fix the error if it was a one-time glitch.
- Click Start > Power > Restart.
- After rebooting, check if ERROR_256 persists.
Step 2: Run System File Checker (SFC) and DISM Tool
Corrupted or missing system files can lead to ERROR_256. Windows has built-in tools to scan and repair these files.
How to Run SFC:
- Press Windows key + X and select Windows Terminal (Admin) or Command Prompt (Admin).
-
Type the following command and press Enter:
sfc /scannow
- Wait while Windows scans and repairs system files. This could take some time.
- Once completed, restart your PC.
How to Run DISM:
If the SFC scan doesn’t resolve the issue, try the DISM tool, which can repair the Windows image:
- Open Windows Terminal (Admin) again.
-
Run the following commands one by one:
DISM /Online /Cleanup-Image /CheckHealth
DISM /Online /Cleanup-Image /ScanHealth
DISM /Online /Cleanup-Image /RestoreHealth - After the process finishes, reboot your system.
Try running the application or process again that caused the ERROR_256.
Step 3: Update Windows and Device Drivers
Outdated system software or drivers can trigger ERROR_256 due to compatibility issues.
- Press Windows key + I to open Settings.
- Go to Update & Security > Windows Update.
- Click Check for updates and install any available updates.
- Next, update your device drivers:
- Right-click Start > Device Manager.
- Look for any devices with a yellow warning icon.
- Right-click the device, select Update driver, then choose Search automatically for drivers.
- Restart your computer again after updates are installed.
Step 4: Check for Software Conflicts
If you see ERROR_256 while running a specific application, software conflicts might be the cause.
- Boot into Safe Mode to load Windows with minimal drivers and programs:
- Press Windows key + R, type
msconfig, and hit Enter. - Under the Boot tab, check Safe boot and select Minimal.
- Click Apply > OK, then restart your PC.
- Press Windows key + R, type
- Try to reproduce the error in Safe Mode.
- If the error doesn’t occur, a third-party application or service is likely causing the conflict.
- Open Task Manager and disable non-essential startup programs.
- Use System Configuration (msconfig) to selectively disable startup services.
- Restart normally and enable services/apps one by one to isolate the culprit.
Step 5: Perform a Clean Boot
A clean boot starts Windows with a minimal set of drivers and startup programs.
- Press Windows key + R, type
msconfig, and press Enter. - On the Services tab, check Hide all Microsoft services.
- Click Disable all.
- Go to the Startup tab and click Open Task Manager.
- Disable all startup items.
- Close Task Manager and click OK in the System Configuration window.
- Restart your PC.
- If ERROR_256 disappears, gradually re-enable services/startup items to identify which one causes the issue.
Step 6: Scan for Malware
Malware infection can interfere with system processes and cause various errors including ERROR_256.
- Run a full system scan using Windows Defender or any trusted antivirus software.
- Remove any detected threats and restart your computer.
Step 7: Repair or Reinstall the Affected Application
If ERROR_256 relates to a particular program, repairing or reinstalling the app can help.
- Press Windows key + I > Apps.
- Find the affected application from the list.
- Click on it and select Modify or Repair if available.
- If not, uninstall the application and reinstall it freshly from the official source.
Step 8: Perform a System Restore
If ERROR_256 started recently, you can restore your PC to a previous working state.
- Type Create a restore point in the Windows search bar and open it.
- Click System Restore.
- Follow the on-screen instructions to select a restore point dated before the issue began.
- Complete the restore process and check if the error is fixed.
Step 9: Reset Windows (Last Resort)
If none of the above steps work, resetting Windows might be your best option.
- Go to Settings > Update & Security > Recovery.
- Under Reset this PC, click Get started.
- Choose Keep my files to avoid losing personal data.
- Follow through the prompts to complete the reset.
Note: Make sure to back up important files before proceeding.
Final Thoughts
Encountering ERROR_256 can be frustrating, but most causes are fixable with patience and the right steps. Always make sure your system is backed up, keep your software updated, and run regular scans to maintain a healthy Windows environment.
If after following this guide the error persists, consider reaching out to Microsoft Support or a professional technician for advanced help.
Did this guide help you fix ERROR_256? Leave a comment below or share your experience to help others facing similar issues! For more Windows tips and troubleshooting, don’t forget to bookmark this page.
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