How to Fix “Parameter is Incorrect” Bluetooth Error on Windows 11/10 ✅

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Are you struggling with the frustrating “The parameter is incorrect” error when trying to manage your Bluetooth services in Windows? You’re not alone. This common error typically occurs when attempting to change the Bluetooth Support Service from manual to automatic startup, preventing users from resolving their Bluetooth connectivity issues. In this comprehensive guide, I’ll walk you through a proven solution using both the Windows Services application and Registry Editor.

Understanding the ‘Parameter is Incorrect’ Error

Before diving into the solution, it’s important to understand what causes this error. The “Parameter is incorrect” message typically appears when Windows encounters permission or registry-related issues while attempting to modify service configurations. This particularly affects the Bluetooth Support Service and can lead to various connectivity problems, including:

  • Missing Bluetooth enable/disable toggle
  • Unable to connect to Bluetooth devices
  • Bluetooth service startup issues

Prerequisites for Fixing the Error

Before we begin, ensure you have:

  • Administrative access to your Windows 11/10 computer
  • A backup of your registry (recommended)
  • Both Services and Registry Editor applications accessible

Step 1: Open the Services App

  1. Press Windows + R to open the Run dialog box.
  2. Type services.msc and hit Enter.
  3. In the Services window, look for Bluetooth Support Service.
  4. Right-click on it and select Properties.

Step 2: Use the Registry Editor to Fix the Error

To resolve the issue, we need to tweak the system registry. Follow these steps carefully:

Open Registry Editor

  1. Press Windows + S and type Registry Editor. Select the app from the results.
  2. On the left panel, navigate to the following path:
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services

Locate the Bluetooth Service

  1. Identify the service name associated with Bluetooth from the Services app.
    • Open the Properties of Bluetooth Support Service in the Services app.
    • Note the Service Name (e.g., BthSupport).
  2. In Registry Editor, find the folder matching the noted service name.

Modify the Start Value

  1. Inside the folder, locate the Start option.
  2. Double-click on it, and set the Value Data to 2 (this changes the startup type to Automatic).
  3. Click OK to save the changes.

Step 3: Restart and Verify

  1. Close the Registry Editor and return to the Services app.
  2. Refresh the Services app by pressing F5.
  3. Locate the Bluetooth Support Service again and confirm the startup type is now set to Automatic.
  4. Right-click on the service and select Start if it’s not already running.

Additional Tips for Bluetooth Issues

  • Reboot Your PC: After making changes, restart your computer to ensure they take effect.
  • Check Device Manager: Verify that the Bluetooth driver is enabled and updated.
  • Windows Updates: Ensure your system is running the latest updates for compatibility.

Conclusion

With these steps, you should now have successfully resolved the “The parameter is incorrect” error for the Bluetooth Support Service on Windows 11/10. Your Bluetooth functionality should be back to normal, allowing you to connect devices seamlessly.

If you found this guide helpful, please consider subscribing to our channel or leave a comment below. Let us know if you’d like a full guide on solving Bluetooth connectivity issues on Windows.

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