Windows errors can be frustrating, especially when they interrupt your workflow or prevent you from accessing important files. One such error is ERROR_490, which typically appears due to issues related to device accessibility or network device problems. Don’t worry — this detailed, step-by-step guide will help you troubleshoot and fix Windows Error Code ERROR_490 effectively.
What is Windows Error Code ERROR_490?
Before diving into the solutions, it’s helpful to understand what this error means. ERROR_490 usually translates to:
"The device is not connected."
This indicates that Windows is trying to access a device (like a USB drive, network, or multimedia device), but it is unable to do so because the device is disconnected, unresponsive, or there are driver-related problems.
Why Does Error 490 Occur?
Common reasons include:
- Device physically disconnected or poorly connected
- Outdated or corrupted device drivers
- Network device issues (for network drives or devices)
- Problems in the Windows Registry
- USB port or hardware malfunction
How to Fix Windows Error Code ERROR_490: Step-by-Step
Step 1: Disconnect and Reconnect the Device
- If you see this error after plugging in a device (USB, external hard drive, etc.), remove the device safely.
- Wait for a few seconds and reconnect it firmly.
- Check if the error persists.
Tip: Try connecting the device to a different USB port or computer to rule out port or device hardware issues.
Step 2: Restart Your Computer
Sometimes a simple reboot can resolve temporary glitches.
- Close all programs and save your work.
- Restart your PC from the Start menu.
- Once restarted, check if the device is detected and working properly.
Step 3: Check Device Manager for Driver Issues
- Press Windows + X and select Device Manager.
- Look for any devices with a yellow exclamation mark or under “Unknown devices.”
- Right-click on the problematic device and select Update driver.
- Choose Search automatically for updated driver software.
If Windows doesn’t find an update:
- Visit the manufacturer’s website to download the latest driver.
- Install the driver manually.
- Restart your computer.
Step 4: Run the Hardware and Devices Troubleshooter
Windows has a built-in troubleshooter that can automatically identify and fix hardware-related issues.
- Press Windows + I to open Settings.
- Go to Update & Security > Troubleshoot > Additional troubleshooters.
- Select Hardware and Devices, then click Run the troubleshooter.
- Follow the on-screen instructions.
Step 5: Check Network Device Connections (If Applicable)
If ERROR_490 occurs while accessing a network drive or device:
- Make sure you’re connected to the same network.
- Restart your router/modem.
- Verify network sharing settings on the device.
- Try reconnecting the network device.
Step 6: Update Windows Operating System
Regular Windows updates include patches and fixes that can resolve system glitches.
- Go to Settings > Update & Security > Windows Update.
- Click Check for updates.
- Install all available updates and reboot your PC.
Step 7: Scan for System Errors and Corrupted Files
Corrupted system files can cause ERROR_490.
- Open Command Prompt as Administrator (search for “cmd,” right-click and choose “Run as Administrator”).
- Type
sfc /scannowand press Enter. - Wait until the scan completes and follow any prompts.
- If issues are found and fixed, restart your PC.
Step 8: Check USB Selective Suspend Setting (Power Management)
If the device disconnects intermittently, a power management setting may be causing this.
- Open Control Panel > Power Options.
- Click Change plan settings next to your selected power plan.
- Click Change advanced power settings.
- Expand USB settings > USB selective suspend setting.
- Set it to Disabled. Click Apply and OK.
- Restart your PC.
Step 9: Registry Fix (Advanced Users)
Improper registry entries may cause device detection problems.
Warning: Editing the registry incorrectly can cause severe issues. Always back up your registry first.
- Press Windows + R, type
regeditand press Enter. - Navigate to:
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\USBSTOR - Look for the Start value on the right pane.
- Double-click and set its value to 3 (which means enabled).
- Close Registry Editor and restart your PC.
Step 10: Contact Support or Consider Professional Help
If you still face ERROR_490 after trying all above steps, it might be a hardware fault or a deeper software issue.
- Contact your device manufacturer’s support.
- Reach out to Microsoft support.
- Consult a professional technician if necessary.
Final Thoughts
ERROR_490 can seem intimidating, but with patience and the above troubleshooting steps, most users can resolve it without needing expert intervention. Always remember to:
- Keep backups of important data.
- Handle hardware carefully.
- Keep your system and drivers updated.
By following this step-by-step guide, you’re well-equipped to fix ERROR_490 and keep your Windows system running smoothly.
Did this guide help you fix ERROR_490?
Let us know in the comments or share your troubleshooting tips to help others!
Keywords: Windows Error Code ERROR_490, fix ERROR_490, device not connected error, Windows troubleshooting, update device drivers, Windows hardware error, USB device error Windows
