How to Fix Qualcomm QCZ9565 Bluetooth 4.0 Driver Problem

When the Bluetooth driver has not got the fresh update or has any other technical snags, then it affects the working of Bluetooth on your computer. Windows PC uses the Qualcomm Atheros driver. If the driver gets corrupt for some reason, then it may not connect to Bluetooth devices. When you would try to connect your headphone or other gadgets, then you will face the Qualcomm QCZ9565 Bluetooth 4.0 Driver Error.

In this guide, I have explained some simple fixes to troubleshoot this issue. Normally, non-tech-savvy users may not know how to roll back a Bluetooth driver update or install a fresh one. So, this guide will help them out. Also, the firewall on your Windows PC may disallow to set up a connection from a new Bluetooth device. I will explain how to fix that as well. Let’s begin with the troubleshooting now.

Fix Qualcomm QCZ9565 Bluetooth 4.0 Driver Problem

First, try disabling the firewall. You may also disengage your anti-virus till you can establish the Bluetooth connection with your desired gadget.

Disable Windows Firewall

Here is how to do this

• Press Windows key + I to go to Settings
• Then click Update & Security
  
• On the left-hand panel in the next screen click on Windows Security
  
• Click on Firewall and Network Protection
  
• Then click Public Network which is probably your Internet/WiFi connection
  
• You should see that the Microsoft Windows Firewall is active and is marked as On.
• Click on the toggle to turn it Off.

On the other hand, if you have any 3rd-party Anti-virus system defending your Windows PC, then you have to disable it as well.

• On the system tray, click to expand and see the Anti-virus icon
• Right-click on it > click Disable Temporarily (the exact term may be different depending upon your anti-virus)

Rollback Bluetooth Driver Update

In this troubleshooting, you have to roll back the current firmware version of the Qualcomm Atheros driver installed on your PC.