If you’ve encountered Windows Error Code ERROR_487, you know how frustrating it can be. This error, often accompanied by the message "Attempt to access invalid address", usually indicates issues related to system files, driver conflicts, or corrupt software components. Don’t worry! In this comprehensive guide, we’ll walk you through detailed, easy-to-follow solutions to help you resolve this error and get your Windows system back to smooth operation.
What is Windows Error Code ERROR_487?
Before diving into the fixes, let’s understand what ERROR_487 means. This error is a Windows system error with the code 487 (0x1E7). It generally points to an invalid operation — often when a process tries to access a memory address that is invalid or inaccessible. This can cause applications to crash or fail to start, and it may impact your system’s stability.
Common scenarios where this error appears:
- Running certain applications or games
- Installing or updating software/drivers
- Connecting external devices (USB, printers, Bluetooth devices)
- During Windows updates or system file operations
Step-by-Step Guide to Fix Windows Error Code ERROR_487
Step 1: Restart Your Computer
Sometimes, the simplest action can fix temporary glitches.
- Click on Start.
- Select Power > Restart.
- After rebooting, try to reproduce the error to see if it persists.
Why this helps: A restart clears temporary memory and reloads system files, which can solve transient errors.
Step 2: Run System File Checker (SFC) Scan
Corrupted or missing system files often cause ERROR_487.
- Press Windows + S and type cmd.
- Right-click Command Prompt and choose Run as administrator.
-
In the Command Prompt window, type:
sfc /scannow
- Press Enter.
- Wait patiently while Windows scans and repairs corrupted files.
- Once complete, restart your system.
Tip: Even if the scan reports no issues, this step confirms system integrity.
Step 3: Use DISM to Repair Windows Image
If SFC doesn’t fix the problem, DISM (Deployment Image Servicing and Management) can repair the Windows system image.
- Open Command Prompt as Administrator again.
-
Enter the following commands one by one:
DISM /Online /Cleanup-Image /CheckHealth
DISM /Online /Cleanup-Image /ScanHealth
DISM /Online /Cleanup-Image /RestoreHealth - After each command, wait until the process completes.
- When done, restart your PC.
Note: DISM tools require an internet connection to replace corrupted files.
Step 4: Update Device Drivers
Outdated or corrupt drivers can trigger ERROR_487. Here’s how to update them:
- Press Windows + X and select Device Manager.
- Look for any devices with a yellow warning icon.
- Right-click the device and select Update driver.
- Choose Search automatically for updated driver software.
- Follow the prompts to install updates.
- Restart your computer after completing updates.
Pro tip: For critical devices like graphics cards or network adapters, visit the manufacturer’s website for the latest drivers.
Step 5: Uninstall Recent Software or Updates
If the error started after installing new software or Windows updates, those might be the culprit.
- Go to Settings > Apps > Apps & features.
- Sort by Install date to see recent apps.
- Select suspicious or recently added software and click Uninstall.
- Restart your PC and check if the error remains.
For Windows updates:
- Open Settings > Update & Security > Windows Update.
- Click View update history.
- Select Uninstall updates.
- Choose the recent updates you suspect and remove them.
- Restart your PC.
Step 6: Run Malware and Virus Scans
Malware can cause system instability and errors.
- Open Windows Security by searching in the Start menu.
- Click Virus & threat protection.
- Choose Quick scan or Full scan for a thorough check.
- If threats are found, follow on-screen instructions to remove them.
- Restart your system.
Optional: Use trusted third-party antivirus tools for deeper scans.
Step 7: Perform a Clean Boot
A clean boot helps isolate software conflicts that may cause ERROR_487.
- Press Windows + R, type msconfig, and hit Enter.
- Under the Services tab, check Hide all Microsoft services.
- Click Disable all.
- Now, go to the Startup tab and click Open Task Manager.
- Disable all startup items.
- Close Task Manager and go back to System Configuration, click OK.
- Restart your PC and see if the error occurs.
If the error disappears, gradually enable services and startup items to find the culprit.
Step 8: Restore Your System to a Previous Point
If issues persist, use System Restore to roll back to a stable state.
- Search for Create a restore point via Start.
- Click System Restore….
- Follow the wizard to choose a restore point dated before the error appeared.
- Proceed with restoration and reboot when prompted.
Step 9: Reset Windows as a Last Resort
If none of the above worked, resetting Windows can resolve deep system issues without affecting personal files.
- Open Settings > Update & Security > Recovery.
- Under Reset this PC, click Get started.
- Choose Keep my files.
- Follow the steps to reset Windows.
Final Words: Stay Calm and Methodical
Encountering ERROR_487 can feel daunting, but by methodically following these steps, you’re giving your system the best chance to heal itself. Always remember to back up your important files before performing major troubleshooting actions.
If you found this guide helpful, please share it with others who might be struggling with ERROR_487. And if you’re still stuck, don’t hesitate to seek professional tech support to avoid accidental data loss.
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