Intel® Wireless Bluetooth® for Windows 8.1*



This download record installs Intel® Wireless Bluetooth® version 21.40.5 and driver. Driver version varies depending on the wireless adapter and Windows* OS installed.

Available Downloads

  • Windows 8.1, 64-bit*
  • Size: 11 MB
  • SHA256: B634F5CE4FB101266854514873B873F441A03C4E6E9344B97BB1132596804649
  • Windows 8.1, 32-bit*
  • Size: 11 MB
  • SHA256: B634F5CE4FB101266854514873B873F441A03C4E6E9344B97BB1132596804649

Detailed Description

Important Notice

Please be aware that driver version 21.40.5 is the last available version for the Intel® Wireless Bluetooth® driver for Windows* 8.1 Operating Systems. This software has been End of Life and no additional support will be provided to these drivers.


Intel® Wireless Bluetooth® is recommended for end users, including home users and business customers with Bluetooth® technology.

Intel Wireless Bluetooth Package version = 21.40.5

  • Driver version = for Windows 8.1* using 18265, 8265, 8260, 18260
  • Driver version = for Windows 8.1* using 3168, 3165, 7265, 17265

Note: When you update the software package, it might not update the wireless adapter driver if it includes the same driver as the previous release. 

Not sure what to download?

Confirm that you have Windows 8.1 operating system before installing. Check if your operating system is 32-bit or 64-bit.

Note: Some products support only 64-bit version of Windows 8.1. See supported operating systems for Intel® Wireless Products for details.

Ensure that your wireless adapter is supported by this download. List of supported wireless adapters available below.

Determine which wireless adapter is installed in your computer system:

Which file should you download?

  • If you have Windows 8.1 32-bit: BT_21.40.5_32_Win8.1.exe
  • If you have Windows 8.1 64-bit: BT_21.40.5_64_Win8.1.exe

How to install

Download the file to a folder on your PC. Double-click the file to launch installation.

See the release notes for installation instructions, supported hardware, what is new, bug fixes, and known issues.

About Intel® software and drivers

The driver or software for your Intel® component might have been changed or replaced by the computer manufacturer. We recommend you work with your computer manufacturer before installing our driver so you don’t lose features or customizations.

See list of computer manufacturer support websites.

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