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Having problems with Bluetooth in window 10? KB4505903 update may be at fault



We are often advised to ensure that all the latest Windows updates are installed in the name of security, and to ensure that we have access to all the latest features. But sometimes things go awry, as the KB4505903 update illustrates for Windows 10.

This cumulative update was released a bit back ̵

1; July 26, to be exact – but in recent weeks, Bluetooth issues have been encountered. You may find that you cannot connect your Bluetooth speaker or this audio quality is terrible. Microsoft has a solution.

See also:

The update in question applies to Windows 10 version 1903, and since it was released, Microsoft warns that "on a computer with an internal speaker installed" there may be problems. In a support article, the company explains three major issues that can occur:

  • The Bluetooth speaker cannot connect to the computer.
  • The Bluetooth speaker can be connected to the computer. However, the output of the speakers sounds noisy (poor quality).
  • The Bluetooth speaker can be connected to the computer. However, the sound is generated from the internal speaker instead of a Bluetooth device.

On top of that, Microsoft says that "in Device Manager, you notice a record under the Native Audio, Video and Game Controller for Microsoft Bluetooth A2dp Source showing a yellow icon (exclamation mark)."

For now, the solution is to uses the System File Checker tool:

1. Open the command console using an administrative authority.

2. At the command prompt, type the following command and press Enter:

sfc / scannow

Note It may take several minutes for the command operation to currently preferred to supply complete.

3. After completion of the process and restart the computer. [19659015] Credit images: Wiktoria Pawlak / Shutterstock [19659016] (function (d, s, id) {
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