Csr 4.0 Bluetooth: Driver Download Verified Latest Version

: Often fails to work with Windows 10/11 default generic drivers. Users frequently report "driver error" messages unless the specific CSR Harmony software stack is installed. Microsoft Learn Where to Download the Latest Drivers

You might wonder: "My CSR 4.0 dongle worked fine before. Why do I need a new driver?" Here are the concrete reasons: csr 4.0 bluetooth driver download latest version

A: Backward compatible? Yes, a Bluetooth 5.0 headset will work with CSR 4.0, but only at Bluetooth 4.0 speeds and features. BLE features may be limited. : Often fails to work with Windows 10/11

Some older driver packages include CSR Harmony software. This is a full Bluetooth stack replacement. for Windows 10/11 because it may conflict with Microsoft’s native stack. Only use Harmony if you are on Windows 7 or 8. Why do I need a new driver

Go to and uninstall anything named "CSR Harmony" or "Bluetooth Suite". Restart your computer. 2. Install the New Driver

In this guide, we will cover everything you need to know: what CSR 4.0 is, how to identify your device, where to get the official and latest drivers, a step-by-step installation guide, troubleshooting common errors, and answers to frequently asked questions.

A: Yes. CSR is the chipset manufacturer. A CSR 4.0 adapter supports all Bluetooth 4.0 features, including BLE.

Dec 3rd, 2017 - Classic Shell is no longer actively developed

After 8 years I have decided to stop developing Classic Shell. The source code for the latest version is released on SourceForge. More details here.

Aug 12th, 2017 - General release 4.3.1 is out

It officially supports the Creators Update for Windows 10. More details here.

Jul 30th, 2016 - General release 4.3.0 is out

It officially supports the Anniversary Update for Windows 10. More details here.

May 22nd, 2016 - Beta version 4.2.7 is out

QFE fix for a crash bug in beta version 4.2.6 that affects 32-bit Windows 10.

May 21st, 2016 - Beta version 4.2.6 is out

It improves support for Windows 10 Redstone, adds taskbar skinning, menu animations, and many new features. More details here.

Choose between 3 different styles: 

The Classic Start Menu is compatible with:

Download DisplayFusion from here

Many usability improvements to Explorer (every feature can be turned on or off):

: Often fails to work with Windows 10/11 default generic drivers. Users frequently report "driver error" messages unless the specific CSR Harmony software stack is installed. Microsoft Learn Where to Download the Latest Drivers

You might wonder: "My CSR 4.0 dongle worked fine before. Why do I need a new driver?" Here are the concrete reasons:

A: Backward compatible? Yes, a Bluetooth 5.0 headset will work with CSR 4.0, but only at Bluetooth 4.0 speeds and features. BLE features may be limited.

Some older driver packages include CSR Harmony software. This is a full Bluetooth stack replacement. for Windows 10/11 because it may conflict with Microsoft’s native stack. Only use Harmony if you are on Windows 7 or 8.

Go to and uninstall anything named "CSR Harmony" or "Bluetooth Suite". Restart your computer. 2. Install the New Driver

In this guide, we will cover everything you need to know: what CSR 4.0 is, how to identify your device, where to get the official and latest drivers, a step-by-step installation guide, troubleshooting common errors, and answers to frequently asked questions.

A: Yes. CSR is the chipset manufacturer. A CSR 4.0 adapter supports all Bluetooth 4.0 features, including BLE.