After downloading the January KB5009596 cumulative update, Microsoft addressed a known Bluetooth problem that caused certain Windows 10 computers to malfunction with a blue screen of death (BSOD). Microsoft solved the issue with the launch of the voluntary KB5011543 Preview cumulative update.
Because CSP regulations are uncommon outside of corporate contexts, it is most likely only affecting enterprise users. Only client platforms are impacted, including Windows 10 21H2, Windows 10 21H1, and Windows 10 20H2.
As Microsoft explains, some businesses with Windows devices attached to Bluetooth devices may receive an error message.
The error
Users get an error message that says ‘Your device ran into a problem and needs to restart.’ with a blue screen and ‘Stop code: IRQ NOT LESS OR EQUAL’ after downloading KB5009596 or subsequent updates.
The error will be noted as ‘Microsoft-Windows-WER-SystemErrorRe event 1001 ‘, with the words ‘The computer has rebooted from a bugcheck. The bugcheck was: 0x0000000a,’ accompanying it.
On systems where certain configuration service provider (CSP) settings are enabled on the device and influence the Bluetooth A2DP profile, BSODs may occur.
Workaround
IT administrators who are unable to deploy the KB5011543 cumulative update, which was issued on Tuesday, can handle the issue by utilizing Intune or other technologies that allow them to alter the Windows registry before downloading the flawed KB5009596 update.
To prevent the emergence of the BSODs, one needs to:
- Go to HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\PolicyManager\current\device\Bluetooth\
- Add this registry entry: {0000110a-0000-1000-8000-00805f9b34fb} and {0000110b-0000-1000-8000-00805f9b34fb} to the ServicesAllowedList value
However, Microsoft warns users to be cautious by backing up the registry before modifying it, to ensure they can complete a restore if a problem comes up. Windows users can check out the Windows health dashboard for more information on the problem and how to mitigate it.
Tip: Also read about the requirement that users have a Microsoft Account in order to be able to install the latest version of Windows 11 Pro.
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