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How to Fix Windows System Error Code ERROR_103: Step-by-Step Troubleshooting Guide


If you’ve encountered Windows System Error Code ERROR_103, you know how frustrating it can be when your computer suddenly throws an error that seems to bring your work or entertainment to a halt. This specific error — often accompanied by a message like "The system cannot open the device or file specified" — hints at underlying issues related to permissions, corrupted files, or device conflicts.

The good news? Fixing ERROR_103 isn’t as difficult as it may seem. In this detailed step-by-step guide, I’ll walk you through effective troubleshooting techniques that help resolve this error and get your Windows system back on track. Let’s dive right in!


What is Windows System Error Code ERROR_103?

Before we jump into fixes, it’s important to understand what ERROR_103 means. This error code typically occurs when Windows tries to access a device or file but fails due to:

  • Permission restrictions
  • Corrupted or missing files
  • Device driver conflicts
  • Problems with attached external devices

Knowing this will help you tackle the root cause rather than just the symptom.


Step 1: Restart Your Computer

Sometimes, the simplest fix is the most overlooked. Restarting your system can clear up temporary glitches or minor conflicts causing ERROR_103.

How to do it:

  1. Click the Start menu.
  2. Select the Power icon.
  3. Click Restart.

After rebooting, check if the problem persists. If yes, move on to the next steps.


Step 2: Run Windows as Administrator

ERROR_103 often occurs due to insufficient permissions. Running the troublesome application or process with administrator privileges can bypass these restrictions.

How to run as administrator:

  1. Find the program or file causing the error.
  2. Right-click on it.
  3. Select Run as administrator.

Try this and see if the issue goes away.


Step 3: Check File or Device Permissions

If a file or device is locked from your access, Windows will throw errors like ERROR_103. Adjusting permissions might solve this.

How to check and modify permissions:

  1. Right-click the problematic file or folder.
  2. Click Properties.
  3. Go to the Security tab.
  4. Click Edit, then select your user account.
  5. Make sure Full control or the necessary permissions are checked.
  6. Click Apply and OK.

If permissions were the problem, this should fix the error.


Step 4: Disconnect and Reconnect External Devices

If ERROR_103 appears when accessing an external device (e.g., USB drive, external hard disk), try unplugging and reconnecting it.

Tips:

  • Use a different USB port.
  • Avoid USB hubs; connect devices directly to the computer.
  • Try the device on another computer to rule out hardware issues.

If the device works elsewhere but not on your PC, continue with driver troubleshooting.


Step 5: Update or Reinstall Device Drivers

Outdated or corrupted drivers are a common culprit for ERROR_103, especially related to hardware devices.

Update drivers via Device Manager:

  1. Press Windows + X and select Device Manager.
  2. Locate the device causing the issue.
  3. Right-click it and choose Update driver.
  4. Select Search automatically for updated driver software.

If this doesn’t work, try reinstalling the driver:

  1. In Device Manager, right-click the device and choose Uninstall device.
  2. Restart your computer. Windows will attempt to reinstall the driver automatically.


Step 6: Run System File Checker (SFC) Scan

Sometimes, ERROR_103 stems from corrupted system files. Windows has a built-in tool to repair these — the System File Checker.

How to run an SFC scan:

  1. Press Windows + S, type cmd.
  2. Right-click Command Prompt and select Run as administrator.
  3. In the command window, type:

    sfc /scannow

  4. Press Enter and wait for the scan to complete.

The tool will automatically fix corrupted files if found. Restart your PC and check if the error remains.


Step 7: Use Disk Check Utility

File system errors on your disk can cause access issues leading to ERROR_103. Running a disk check can spot and repair these.

Run Check Disk:

  1. Open Command Prompt as administrator (see step 6).
  2. Type:

    chkdsk C: /f /r /x

    (Replace C: with the relevant drive letter.)

  3. Press Enter.
  4. If prompted to schedule check at the next reboot, type Y and restart your PC.

The utility will scan for and fix disk errors.


Step 8: Perform a Clean Boot to Identify Software Conflicts

Sometimes third-party software conflicts cause ERROR_103. A clean boot disables unnecessary startup programs and services so you can isolate the issue.

Perform a Clean Boot:

  1. Press Windows + R, type msconfig, and press Enter.
  2. Go to the Services tab.
  3. Check Hide all Microsoft services.
  4. Click Disable all.
  5. Go to the Startup tab and click Open Task Manager.
  6. Disable all startup items.
  7. Close Task Manager, click OK in System Configuration.
  8. Restart your computer.

If ERROR_103 disappears, enable services and startup programs one-by-one to find the culprit.


Step 9: Restore Your System to a Previous Point

If everything else fails, restoring Windows to an earlier state before the problem began can be lifesaving.

How to perform System Restore:

  1. Press Windows + S, type rstrui.
  2. Select Create a restore point.
  3. Go to the System Protection tab.
  4. Click System Restore… and follow the prompts.
  5. Choose a restore point dated before the error appeared.
  6. Complete the process and restart your computer.


Final Thoughts

Encountering ERROR_103 can disrupt your Windows experience, but with patience and these detailed steps, you can troubleshoot and fix the problem with confidence. Remember, making regular backups and keeping your system updated are your best defense against unexpected errors.

If none of these steps resolve your issue, consider reaching out to Microsoft Support or a professional technician for advanced help.


Frequently Asked Questions (FAQs)

Q1: Can a virus cause ERROR_103?
Yes, malware can corrupt files or block device access, leading to this error. Running a full antivirus scan is recommended if you suspect infection.

Q2: Is ERROR_103 hardware or software-related?
It can be both. The error often arises from software permission issues or hardware device conflicts.

Q3: Will reinstalling Windows fix ERROR_103?
Reinstalling Windows is a last resort but usually resolves persistent errors if caused by system corruption.


I hope this guide helps you navigate and fix Windows System Error Code ERROR_103 effectively. If you have any questions or want more personalized support, feel free to ask!

Updated on June 17, 2025
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