The June 2019 cumulative updates are now available for all supported versions of Windows and the focus of the patches is specifically on security improvements. Windows 10 May 2019 Update is receiving KB4503293 which brings up Build 18362.175. On the other hand, Windows 10 October 2018 Update is getting Build 17763.557.

It looks like one of the security improvement included in June 2019 updates could break your Bluetooth device if they fail to meet the requirements.

Spotted by us, Microsoft quietly published a new support document to announce that Windows 10’s latest cumulative update may break your Bluetooth devices if they are outdated. It means you’ll experience problems when connecting or pairing your Windows 10 computer to an outdated Bluetooth device.

This change applies to all versions of Windows 10, including May 2019 Update and Windows 10 version 1507. This also applies to Windows 8.1, but Windows 7 remains unaffected.

“You may experience issues pairing, connecting or using certain Bluetooth devices after installing security updates released June 11, 2019. These security updates address a security vulnerability by intentionally preventing connections from Windows to unsecure Bluetooth devices. Any device using well-known keys to encrypt connections may be affected, including certain security fobs,” Microsoft explains.

Advanced users familiar with the Event Viewer program can determine whether their device is affected by looking for the following Event Log:

Bluetooth event log

Some devices affected only

Microsoft is breaking some Bluetooth devices to fix a security vulnerability. The June 2019 update includes a change that is designed to prevent connections from Windows to unsecure Bluetooth devices.

It’s not known how many devices are affected by the update, but it appears that the connection of Bluetooth device using well-known keys to encrypt connections is likely to be blocked.

It’s worth noting that only a small number of devices are affected and you are recommended to install updates for your Bluetooth device if you experience any connection issues.

Other improvements

This month’s cumulative update for Windows 10 does not come with a long list of fixes. The Patch Tuesday update resolves security bugs in the OS and other first-party apps like Microsoft Edge, Internet Explorer and other components like Windows Kernel.

As always, you can download and install it by checking for updates in the Settings app. You can also defer the update for a limited period of time from the advanced settings page.