KB5011543 fixes critical Bluetooth bug that caused BSOD on Windows 10

by Alexandru Poloboc
Alexandru Poloboc
Alexandru Poloboc
News Editor
With an overpowering desire to always get to the bottom of things and uncover the truth, Alex spent most of his time working as a news reporter, anchor,... read more
Affiliate Disclosure
  • It appears that KB5011543 didn't just bring the Search Highlights feature to Windows 10.
  • Besides that, it also fixed a critical Bluetooth bug that was causing problems since January.
  • Microsoft also provided an official workaround to this problem on the official release page.
windows 10

The Redmond-based tech giant has just released an important fix for a critical Bluetooth bug that was causing blue screens of death on Windows 10.

This is apparently a thing since the January KB5009596 builds. The fix was issued via the latest Windows 10 builds 19042.1620, 19043.1620, and 19044.1620, under KB5011543, that were released earlier today.

Let’s get right into it and see what exactly we are dealing with, or were dealing with, since Microsoft has finally fixed this horrendous glitch.

BSOD Bluetooth error finally fixed with KB5009596

After installing KB5009596 or later updates, some organizations which have Windows devices paired to Bluetooth gadgets might receive this error: Your device ran into a problem and needs to restart.

Of course, this dreaded error message was accompanied by a blue screen and Stop code: IRQ NOT LESS OR EQUAL.

The error logged on affected devices will be in the System log in Event Viewer and will be logged as Microsoft-Windows-WER-SystemErrorRe event 1001 with the text The computer has rebooted from a bugcheck. The bugcheck was: 0x0000000a .

SummaryOriginating updateStatusLast updated
Devices with certain Bluetooth pairings might receive error messages on a blue screen
Devices using the Bluetooth/ServicesAllowedList CSP Group Policy might receive an “IRQ NOT LESS OR EQUAL” error message.
OS Build 19041.1503
14:00 PT

Now we can breathe a sigh of relief as KB5011543, the same one that brought Search Highlights to Windows 10, finally fixed the issue.

To mitigate this issue, IT administrators using Intune or other tools can modify the Windows registry before installing this update following the steps below:

  • Go to HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\PolicyManager\current\device\Bluetooth\ 
  • Add the following registry entry: {0000110a-0000-1000-8000-00805f9b34fb} and {0000110b-0000-1000-8000-00805f9b34fb} to the ServicesAllowedList value

A lot more details about this issue can be found on the official Microsoft page, where the detailed report has been posted.

Have you also been affected by this horrendous bug? Share your experience with us in the comments section below.

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