Bluetooth Device Code 39 Error

Question

tried everything and always getting this error code 39. There is nothing left i didn't do so is there actually a way to make this work ?

Answer 1

Hi ChadXS,

I'm Pau, your Independent Advisor. I know how frustrating it is to keep getting the Bluetooth Code 39 error after trying everything. I appreciate your patience and am here to help.

Here are some proven steps that have helped many users fix this issue:

1. Bluetooth Driver Uninstall

• Device Manager opens when you right-click Start.
• Expand Bluetooth and uninstall the error-causing device.
• Check “Delete the driver software for this device” if asked.
• Allow Windows to reinstall a clean driver by restarting.

2. Install Manufacturer's Latest Driver

• Visit your motherboard or device manufacturer's website.
• Download the latest Bluetooth driver from your model's support page.
• Restart your PC after installing.

3. Fix the Registry (only if UpperFilters or LowerFilters exist)

• Run regedit (Windows key + R) to open Registry Editor.
• Go to: HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Class{e0cbf06c-cd8b-4647-bb8a-263b43f0f974}.
• Right-click and delete UpperFilters and LowerFilters entries.
• Restart your device after.

4. Use Bluetooth Troubleshooter.

• Go to Settings > Update & Security > Troubleshoot > More troubleshooters.
• Apply fixes by selecting Bluetooth and following prompts.

5. Bluetooth Services Should Run

• Enter services.msc. Run/Enter.
• Set the following services to “Automatic” and start them if necessary: Support for Bluetooth Service Bluetooth Audio Gateway Support for Bluetooth users

6. Check System Files

• Open Command Prompt as administrator and type sfc/scannow.
• Restart your PC after the scan.

7. Clean Your Boot

• Disable third-party services and startup programs with msconfig.
• Check for software conflicts by restarting your PC.

Please try these steps and let me know how things go and hoping that I addressed your concerns. Please contact us if you need help.

Best wishes,

Pau

Answer 2

Did all that and still getting code 39 error. This laptop originally was Windows 8 and Bluetooth was working without any errors. After i updated it to Windows 11 im getting code 39 error since then.

Answer 3

Hi ChadXS,

Thanks again for updating. Bluetooth worked fine on Windows 8 but now shows Code 39 after upgrading to Windows 11. I know how frustrating it is. After completing all basic and advanced steps, let's explore deeper solutions that may solve this problem.

These tips address compatibility and workarounds for older hardware:

1. Install legacy-compatible drivers

Windows 11 drivers are missing for some older Bluetooth chips. Try the Windows 8 or 10 driver.

Device or motherboard manufacturer support page

Download the latest Bluetooth driver (even for Windows 8 or 10).

Right-click the installer > Select Properties.

Tab Compatibility > Select “Run this program in compatibility mode for” Choose Windows 8/10.

Run the installer and reboot.

Even Windows 11 can be restored to full functionality.

2. Use Microsoft Generic Bluetooth Driver

This prevents manufacturer-specific driver issues.

Launch Device Manager.

Right-click the error Bluetooth device.

Select Driver Update > Find drivers on my computer.

Use "Let me pick from a list of available drivers"

Select and install “Generic Bluetooth Adapter”.

Restart your computer.

3. Upgrade BIOS/UEFI

A major system upgrade may cause Bluetooth hardware communication issues with an outdated BIOS.

Brand-specific laptop support websites

Discover your model and check for BIOS/firmware updates.

Following the manufacturer's step-by-step update instructions

Restart your computer after updating.

Only update the BIOS if you're comfortable, or ask for help.

4. Disable driver signature enforcement temporarily

Even safe older drivers may be blocked by Windows 11.

Click while holding Shift. Start Advanced Startup again.

Select Troubleshoot > Advanced > Startup Settings. Restart

Disable driver signature enforcement with F7.

Bluetooth driver reinstall

Restart your PC normally.

This lets you test older drivers without Windows blocking them.

5. Use USB Bluetooth Adapter

An external Bluetooth dongle is a simple and reliable solution if none of the above work.

Find a Windows 11-compatible Bluetooth 5.0 USB adapter.

Simply plug it into a USB port for Windows to detect and install it.

Ensure Bluetooth features work now.

6. Optional: Revert to Windows 10 compatibility

Windows 10 reinstallation may be necessary if Windows 11's internal Bluetooth hardware fails.

Settings > System > Recovery

Select “Go back” if available.

If not, reinstall Windows 10 with the Media Creation Tool.

I hope one of these final steps restores Bluetooth.

Best wishes,

Pau