Fix Realtek 8852BE Wireless LAN WiFi 6 Adapter Not Working Error Code 10/43/45/56/39 Windows 11/10

 The Realtek 8852BE Wireless LAN WiFi 6 Adapter not working with error codes 10, 43, 45, 56, or 39 in Windows 11/10 can be frustrating. Here's a comprehensive troubleshooting guide to help you resolve the issue:

1. Basic Troubleshooting Steps:

• Restart Your Computer: A simple restart can often resolve temporary glitches.
• Restart Your Router/Modem: Power cycle your router and modem by unplugging them, waiting for 30 seconds, and plugging them back in.
• Check Physical Connections: If you're using an external Wi-Fi adapter, ensure it's securely plugged into the USB port.
• Run Windows Network Troubleshooter:
  • Go to Settings > System > Troubleshoot > Other troubleshooters.
  • Run the Internet Connections and Network Adapter troubleshooters.¹

2. Update or Reinstall the Realtek 8852BE Driver:

• Update Driver via Device Manager:
  • Press Windows key + X and select Device Manager.
  • Expand Network adapters.
  • Right-click on Realtek 8852BE Wireless LAN WiFi 6 Adapter and select Update driver.
  • Choose Search automatically for drivers. If Windows finds an update, install it.
• Manually Update Driver from Realtek or Laptop Manufacturer:
  • Visit the Realtek website or your laptop manufacturer's support website (Dell, HP, Lenovo, etc.).
  • Search for the latest drivers for the Realtek 8852BE Wireless LAN WiFi 6 Adapter for your specific Windows version (11 or 10).
  • Download the driver and install it.
  • Uninstall and Reinstall Driver:
    • In Device Manager, right-click the Realtek 8852BE adapter, and select Uninstall device.
    • Check the box that says "Delete the driver software for this device" if the option is available and then click uninstall.
    • Restart your computer. Windows might automatically reinstall the driver. If not, install the driver you downloaded manually.

3. Network Reset:

• Windows 11:
  • Go to Settings > Network & internet > Advanced network settings > Network reset.
  • Click Reset now and confirm.
• Windows 10:
  • Go to Settings > Network & Internet > Status > Network reset.
  • Click Reset now and confirm.

4. Disable Power Management Settings:

• Device Manager:
  • Open Device Manager, expand Network adapters, and right-click on the Realtek 8852BE adapter.
  • Select Properties.
  • Go to the Power Management tab.
  • Uncheck the box that says "Allow the computer to turn off this device to save power".
  • Click OK.²

5. Check for Windows Updates:

• Ensure your Windows 11/10 system is up-to-date. Go to Settings > Windows Update and click Check for updates. Install any available updates.

6. BIOS/UEFI Settings:

• In rare cases, BIOS/UEFI settings can interfere with Wi-Fi adapters.
  • Restart your computer and enter the BIOS/UEFI setup (usually by pressing Del, F2, F10, or Esc during startup).
  • Look for settings related to wireless or network adapters. Ensure they are enabled.
  • Be very careful when changing bios settings. Incorrect settings can cause serious issues.

7. System File Checker (SFC) and DISM:

• SFC (System File Checker):
  • Open Command Prompt as administrator.
  • Type sfc /scannow and press Enter.
  • Wait for the scan to complete and follow any on-screen instructions.
• DISM (Deployment Image Servicing and Management):
  • Open Command Prompt as administrator.
  • Type the following commands, pressing Enter after each:
    • DISM /Online /Cleanup-Image /CheckHealth
    • DISM /Online /Cleanup-Image /ScanHealth³
    • DISM /Online /Cleanup-Image /RestoreHealth⁴
  • Wait for the process to complete.

8. Hardware Issues:

• If none of the above solutions work, there might be a hardware problem with the Realtek 8852BE adapter itself.
  • If your laptop is under warranty, contact the manufacturer for support.
  • If it's an external adapter, consider replacing it.

Error Code Specific Information:

• Error Code 10: This usually indicates a driver issue. Focus on updating or reinstalling the driver.
• Error Code 43: This often means Windows has stopped the device due to reported problems. Driver issues or hardware problems are common causes.
• Error Code 45: This signals that the device is not connected to the computer. Check the adapter's connection.
• Error Code 56: Windows is still in the process of setting up the class configuration for this device. This can be caused by software conflicts. Restarting the computer is usually the fix for this error.
• Error Code 39: Windows cannot load the device driver for this hardware. A corrupted or missing driver is the usual cause.

By systematically working through these troubleshooting steps, you should be able to identify and resolve the issue with your Realtek 8852BE Wireless LAN WiFi 6 Adapter.