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  ARM Give a man a fire and he's warm for a day, but set fire to him and he's warm for the rest of his life (Terry Pratchett, Jingo)

Microsoft Windows Firewall complains about Microsoft code

(2025/07/03)


A mysterious piece of "under development" code is playing havoc with the Windows Firewall after the latest preview update for Windows 11 24H2.

The problem manifests as an error in the Event Viewer for Windows Firewall With Advanced Security and can occur following the installation of the [1]June 2025 Windows non-security preview update .

Microsoft is about to retire default outbound access for VMs in Azure [2]READ MORE

In the latest entry in Windows 11 24H2's hall of shame – aka Microsoft's [3]Release Health Dashboard – the company explained: "The event appears as 'Config Read Failed' with message 'More data is available.'

"Although this event is logged in Event Viewer every time the device is restarted, they do not reflect an issue with Windows Firewall, and can be disregarded."

So, there you go. Something in the update has upset the Windows Firewall, but users should ignore it and continue with their day.

[4]The SmartNIC revolution fell flat, but AI might change that

[5]Dems hyperventilate about Palantir's work with the IRS in letter to CEO Karp

[6]Ransomware crews add 'EDR killers' to their arsenal – and some aren't even malware

[7]Palo Alto firewalls under attack as miscreants chain flaws for root access

The problem is "related to a feature that is currently under development and not fully implemented," according to Microsoft. It also stated that the Windows Firewall "is expected to function normally," which is reassuring, and "there is no impact to Windows processes associated to [sic] this event."

The Event Log is also used to monitor the health of Windows devices, so spurious errors – even ones that can be ignored – will be a headache.

[8]

The Register asked Microsoft for more details about the mystery feature in question, but the company has yet to respond.

[9]

Confessing to leaving an in-development feature in production code is not a great look, particularly when it triggers errors in the Event Log. Isn't that what the Windows Insider program is for?

That said, let the programmer who has never left a bit of work-in-progress code in an app that can, in theory, never be accessed by end users cast the first stone.

[10]

We'd like to say that we expect better from Microsoft, but judging by the cavalcade of problems that have cropped up with Windows 11 24H2 since it first seeped under the Redmond build lab's door, we're relieved that at least this one doesn't seem to be crashing anything.

Microsoft did not provide an estimated timeframe for when the issue will be resolved. It said, "We are working on a resolution and will provide an update in an upcoming release." ®

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[1] https://support.microsoft.com/en-gb/topic/june-26-2025-kb5060829-os-build-26100-4484-preview-e31ba7c2-ff65-4863-a462-a66e30840b1a

[2] https://www.theregister.com/2025/06/24/outbound_access_vms_azure/

[3] https://learn.microsoft.com/en-gb/windows/release-health/status-windows-11-24h2#3355msgdesc

[4] https://www.theregister.com/2025/06/26/will_ai_save_dpus/

[5] https://www.theregister.com/2025/06/17/palantir_questioned_letter_democrats/

[6] https://www.theregister.com/2025/03/31/ransomware_crews_edr_killers/

[7] https://www.theregister.com/2025/02/19/palo_alto_firewall_attack/

[8] https://pubads.g.doubleclick.net/gampad/jump?co=1&iu=/6978/reg_security/front&sz=300x50%7C300x100%7C300x250%7C300x251%7C300x252%7C300x600%7C300x601&tile=2&c=2aGb9dzQLLMObRkdo-40CbAAAAwk&t=ct%3Dns%26unitnum%3D2%26raptor%3Dcondor%26pos%3Dtop%26test%3D0

[9] https://pubads.g.doubleclick.net/gampad/jump?co=1&iu=/6978/reg_security/front&sz=300x50%7C300x100%7C300x250%7C300x251%7C300x252%7C300x600%7C300x601&tile=4&c=44aGb9dzQLLMObRkdo-40CbAAAAwk&t=ct%3Dns%26unitnum%3D4%26raptor%3Dfalcon%26pos%3Dmid%26test%3D0

[10] https://pubads.g.doubleclick.net/gampad/jump?co=1&iu=/6978/reg_security/front&sz=300x50%7C300x100%7C300x250%7C300x251%7C300x252%7C300x600%7C300x601&tile=4&c=44aGb9dzQLLMObRkdo-40CbAAAAwk&t=ct%3Dns%26unitnum%3D4%26raptor%3Dfalcon%26pos%3Dmid%26test%3D0

[11] https://whitepapers.theregister.com/



JessicaRabbit

They're just not even trying to to follow good software engineering practices at this point.

Andy Non

I doubt the AI that wrote the software cares much for software engineering practices.

Paul Herber

I expect the AI is autistic, OCD, ADHD and has Tourettes as well. Well, **** that.

At this point?

jake

From my perspective, Microsoft has NEVER followed good engineering practices.

Individuals within the company might have in the past, but the company as a whole? Nah. Never happened.

Anonymous Coward

Reminds me of how all of Microsoft's own emails go directly to Spam in Outlook. I never once marked any of their email as spam (possibly never marked anything as spam, I don't use it often), it just does that on it's own, consistently.

Microsoft's own emails go directly to Spam in Outlook

captain veg

Interesting.

When I receive spam I report it to the hosting organisation that was used to send it. Should that sender be Microsoft then I receive an automated response *not* thanking me and stating that they are looking into the issue, or even that I should file a complaint at some online form, but that the abuse role account is not monitored and offering precisely no alternative.

Cunts.

-A.

WTF?

Mike 137

" a feature that is currently under development and not fully implemented "

As a quite long in the tooth engineer I have to ask -- what on earth is an "under development" "feature" doing in a production release? Or have we reached the bottomless pit where there's no such thing any more as a production release? If so, that would explain a lot about the abysmal quality of current software.

Re: WTF?

IGotOut

It's not.

"after the latest preview update for Windows 11 24H2."

Re: WTF?

Excused Boots

"what on earth is an "under development" "feature" doing in a production release? Or have we reached the bottomless pit where there's no such thing any more as a production release?”

Ding.., ding...ding; and this is the correct answer.

No MS really don’t give the tiniest shit about you or your company, push ‘xyz’ out and it breaks your entire company; sorry about that, what are you going to do?

And, maybe they learn something from the effects of ‘xyz’, but it won’t help you, because they don’t care about you, has it improved their LLM?

Windows 11 24H2's hall of shame

navarac

To me, Windows 11 24H2 totally IS a hall of shame. Microsoft's fixation (aka Satya Nadella's directives) with injecting AI into everything they work on, to the exclusion of all else, has got to be the problem. And then they have the audacity to say that 25H2 is basically the same code? Don't expect anything better, in that case. Seems to me that the C Suite have laid off all the software Engineers and are probably relying far too much on the doubtful and often faulty output from AI, to code this stuff.

They [preachers] dread the advance of science as witches do the approach
of daylight and scowl on the fatal harbinger announcing the subversions
of the duperies on which they live.
-- Thomas Jefferson