Can’t pair certain Bluetooth devices anymore on Windows 8 or 10? That’s intentional

Microsoft released security updates for all supported variations of the Windows working system on June 11, 2019. Some of the launched updates patch a Bluetooth safety vulnerability by “deliberately stopping connections between Windows and Bluetooth devices that aren’t safe and use well-known keys to encrypt connections, together with safety fobs”.

In different phrases: Windows prevents the pairing of certain Bluetooth devices with Windows methods after the latest safety replace is put in.

Microsoft notes:

You could expertise points pairing, connecting or utilizing certain Bluetooth devices after putting in safety updates launched June 11, 2019. These safety updates deal with a safety vulnerability by deliberately stopping connections from Windows to unsecure Bluetooth devices.

A support page on the Microsoft Support web site highlights the affected variations and updates:

  • Windows 10: all variations.
  • Windows 8.1
  • Window Server 2019
  • Windows Server 2016
  • Windows Server 2012 R2
  • Windows Server 2012
  • Windows Embedded 8 Standard

The CVE reveals that the problem impacts Android devices solely. It lists Android model to Android 9 as doubtlessly affected. Whether a tool is affected relies upon on the producer. If the producer used a provded instance Long Term Key, it’s affected by the problem.

In the Bluetooth Low Energy (BLE) specification, there’s a supplied instance Long Term Key (LTK). If a BLE machine have been to make use of this as a hardcoded LTK, it’s theoretically potential for a proximate attacker to remotely inject keystrokes on a paired Android host because of improperly used crypto. User interplay shouldn’t be wanted for exploitation. Product: Android. Versions: Android-7.1.1 Android-7.1.2 Android-8.1 Android-9. Android ID: A-128843052.

windows bluetooth pairing issue

Administrators could examine the Event Log to seek out out if a Bluetooth machine is affected by the intentional change:

  1. Load the Event Viewer from the Start Menu.
  2. Switch to Windows Logs > System.
  3. Locate the next occasions:
    • Event Log: System
    • Event Source: BTHUSB or BTHMINI
    • Event ID: 22
    • Level: Error
    • Event Message Text: Your Bluetooth machine tried to determine a debug connection. The Windows Bluetooth stack doesn’t permit debug connection whereas it’s not within the debug mode.
  4. If you see the occasion listed you recognize that the Bluetooth machine is affected by the change.

Microsoft suggests to contact the producer of the Bluetooth machine to find out whether or not machine updates can be found. These must replace the connection choices of the Bluetooth machine to deal with the safety problem for the machine.

Options to attach affected Bluetooth devices, e.g. by overriding the intentional change, haven’t been revealed by Microsoft. The solely choice to revive pairing performance for affected devices for which updates aren’t accessible is to revive an earlier model of the Windows working system. Doing so would open the system up for assaults focusing on that vulnerability, nevertheless. (through Deskmodder, Windows Latest)

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