Softpedia >News >Microsoft >Windows
Softpedia Homepage   

Windows 10 Cumulative Update KB4494441 Causing Bluetooth Issues

Devices with Realtek radio no longer able to pair

Jun 17, 2019 05:12 GMT  ·  By
This update was published on the May Patch Tuesday
   This update was published on the May Patch Tuesday

Microsoft has confirmed another bug in a cumulative update for Windows 10 version 1809, officially known as October 2018 Update.

Published on May 14, cumulative update KB4494441 brought several security fixes to devices running Windows 10 October 2018 Update, including additional mitigations for speculative execution side-channel vulnerabilities.

But according to Microsoft, the same cumulative update could also cause issues with Bluetooth devices, as some may no longer be able to pair successfully. The issue was acknowledged on June 14.

“Devices with Realtek Bluetooth radios may not pair or connect as expected,” Microsoft explains. “Devices with Realtek Bluetooth radios in some circumstances may have issues pairing or connecting to devices.”

According to the software giant, the following platforms are affected:  

Windows 10 version 1809
Windows 10 Enterprise LTSC 2019
Windows Server 2019
Microsoft explains that it’s already working on a fix, and it should be released to users in late June. The company is projected to roll out a new set of non-security cumulative updates later this month, most likely next week, and there’s a chance a fix for this bug would be included as well.

Meanwhile, users running Windows 10 October 2018 Update on their devices can also install the June 2019 cumulative updates, also published by the software firm on Patch Tuesday. The most recent cumulative update for version 1809 is KB4503327, however, it does not resolve the bug hitting the pairing of Bluetooth devices.

To determine the latest cumulative update installed on your device, you can click the Start menu and type winver. Each cumulative update increases the OS build number, so checking this version should help you tell the most recent cumulative update for your device. For example, the OS build numbers of the latest cumulative updates are the following:  

June 11, 2019—KB4503327 (OS Build 17763.557)
May 21, 2019—KB4497934 (OS Build OS 17763.529)