Microsoft introduced in June 2019 a cumulative update that fixes a number of bugs and further improves operating system security. Unfortunately, many have noted since its installation that they can no longer connect their Bluetooth device to Windows 10. Why and how to solve this problem ?
How to Turn on Bluetooth on Windows 10
Open Windows 10 Settings via the keyboard shortcut: Win + I or via the Start menu> Settings then select Devices .
Click on Bluetooth in the left column. Finally, click on the Bluetooth button to activate the Bluetooth connection on your PC.
Bluetooth is activated!
Keep reading if the bluetooth does not work despite it is activated.
Why my Bluetooth device cannot connect ?
Microsoft has introduced a change in the support for Bluetooth devices. If you have been using a mouse, or even headphones for a long time, you may not be able to connect it to your PC since this update. In order to correct a security bug on older Bluetooth devices, Microsoft has decided to no longer allow pairing between devices deemed to be unsafe and its operating system.
Which devices are affected ?
It is unfortunately unclear whether or not your Bluetooth device will be affected by this restriction. Microsoft has not provided detailed information on the number of affected devices and simply states that “any Bluetooth device using known keys to encrypt the connection may be affected”. At first glance, devices using “Low Energy” technology seem to be the most affected. However, if recently you have been unable to connect your Bluetooth device to your PC , you are concerned.
How to solve the Bluetooth connexion problem ?
1. Check if an update exists
The first solution is to install an update to the Bluetooth accessory. Just search Google or the manufacturer’s website for an update. For example, you can enter “firmware [reference of your Bluetooth accessory] in the search engine. Then simply download and install the latest firmware version on your Bluetooth device.
If no update for your accessory is available or if you already have the latest version, the task becomes complicated. I advise you to first contact the manufacturer to ask if an update exists. They may tell you that an update is being finalized, and you will only have to wait a few days to retrieve it. If this is not the case, you will have to go to the next step.
2. Delete the security update
The only solution for the moment consists in removing the Tuesday Patch of June 2019. You will have to go to the Windows Settings / Update & security / View update history, then click on the link Uninstall updates and delete one of these updates depending on the version of your operating system that you can find in Windows settings / System / System information.
Here are the references of the updates:
KB4503293 Windows 10, v. 1903.
KB4503327 Windows 10, v. 1809 and Windows Server 2019.
KB4503286 Windows 10, v. 1803.
KB4503284 Windows 10, v. 1709.
KB4503279 Windows 10, v. 1703.
KB4503267 Windows 10, v. 1607 and Windows Server 2016.
KB4503291 Windows 10, v. 1507.
KB4503276, KB4503290 Windows 8.1 and Windows Server 2012 R2.
Be careful, by uninstalling one of these updates, your PC will no longer be secure, which can present a certain vulnerability in the medium term. This solution is therefore not really one, but may be able to temporarily allow you to use your Bluetooth device until an update is offered by the manufacturer, or you buy a new compatible device.