Troubleshooting Bluetooth Issues

Bluetooth Issues with Windows 10

Please note that most of the Bluetooth issues reported to us are issues with Windows 10, not with your network/Bluetooth adapter or drivers. If you have recently made a change to your machine, after which Bluetooth stopped working correctly, your best solution may be to use Windows System Restore. Click here for Microsoft’s guide on recovery options for Windows 10.

Some users may experience issues with Bluetooth devices. These issues may include, but are not limited to:

  • Unable to discover any devices
  • Unable to discover the devices you wish to use
  • Unable to pair with devices
  • Devices pair but do not work correctly
  • Devices pair and work correctly but intermittently
  • Devices pair and work correctly but disconnect intermittently

The first thing to do is to make sure you have the latest Bluetooth driver installed. Bluetooth drivers for Killer devices are not included in any other package and must be downloaded and installed separately. You can find Bluetooth drivers here:

    If you are unsure which driver to download, you can find which networking adapter your machine uses in Device Manager. To do this, right-click Start, click Device Manager, then double-click Networking Adapters and look for the “Killer Wireless” entry, after which will be listed the model number, which will correspond with the driver above.

    If the issue is not resolved, then the problem could be due to a variety of causes. Found below are the most common fixes for Bluetooth issues, which we update regularly:

    • Update your BIOS from your machine or mainboard manufacturer’s support page.
    • Update your chipset driver from your machine or mainboard manufacturer’s support page.
    • Update the drivers for any other device on your machine that uses any wireless technology, as it may be interfering with your Bluetooth device. For example, if your computer is equipped with Thunderbolt, make sure your Thunderbolt drivers are up to date.
    • If you have a dual-band Wi-Fi connection, use the 5 GHz connection instead of the 2.4 GHz connection. Bluetooth operates on the 2.4 GHz band, and 2.4 GHz Wi-Fi can cause interference with Bluetooth.
    • In your Wi-Fi router or modem’s settings page, change the sideband or side channel of your 2.4 GHz radio to 20 MHz as this creates a tighter radio wave that is less likely to cause interference to other 2.4 GHz devices.
    • Change your Wi-Fi router or modem’s 2.4 GHz channel. Try to stick to Channels 1, 11, or 6. Use the Killer Control Center’s Wi-Fi Analyzer to see which channel has the least interference. If you are already on that channel, switch to the next least interference, and see if that improves your Bluetooth issues.
    • If you have any USB wireless devices connected to your machine, try unplugging them and see if that improves your Bluetooth issues. If it does, try moving the USB dongle to a different USB port, as far away from the original port as possible.
    • Some monitors, LCDs, and televisions can cause interference with higher 2.4 GHz channels. If you are experiencing issues near such a device, try changing the 2.4 GHz channel on your wireless router to 1 or 6 to free up as much space as possible in the upper bands, to reduce interference.
    • Poorly shielded cabling for external devices, unusually high powered devices like hard drives or external media readers and writers, can cause radio interference. If the issue is especially prevalent when using such devices, try replacing the cables.

    Many other things can cause wireless interference. If you are experiencing otherwise unresolved Bluetooth issues, either try to avoid being physically near these potential contributors to interference or take measures to increase and improve shielding, to decrease interference.

    • Microwave ovens
    • Cabling and connectors for Direct Satellite Service (DSS) (If these are old, consider replacing them)
    • Poorly shielded power lines in the wall
    • 2.4 GHz cordless phones (these may have a channel switch on them – try changing it)
    • Wireless RF security video recorders
    • Wireless speakers (for computer or otherwise)
    • Any other wireless device, such as microwave transmitters, wireless cameras, baby monitors, or even a neighbor’s Wi-Fi device, if you live in proximity, where their Wi-Fi device may be just on the other side of the wall, can potentially cause enough interference on the 2.4 GHz band to completely disable Bluetooth.

    The Bluetooth standard is usually very good at finding a space in which to operate, regardless of interference, and the vast majority of the time, it does this without any user interaction. Unfortunately, though, sometimes there is just too much interference, or the interference unbalances the 2.4 GHz wavelength in such a way, that it is impossible to make a connection. You will never eliminate all sources of interference. There are just too many devices that are continually bombarding the 2.4 GHz band, which is why the 5 GHz band was introduced for Wi-Fi. The goal in troubleshooting Bluetooth interference is to eliminate enough interference for the Bluetooth adapter to be able to find a spot with which to make a good connection.

    If you are unable to eliminate the causes of Bluetooth interference, it is possible to increase the shielding. Metal, concrete, and plaster are all very good at reflecting and/or absorbing radio waves, as is brick, to a lesser degree, so consider that when relocating your machine to move away from any interference.

    Updated on April 2, 2019

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