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Windows Defender update: So secure, it wouldn't let Secure-Boot Windows PCs, er, boot
The Register ^ | Feb 4, 2019 | Richard Speed

Posted on 02/05/2019 7:57:57 AM PST by dayglored

Others still can't even get that far

Updated It has been a trying time for Microsoft punters after a Windows Defender update left some PCs unable to boot last week, while other folk continue to struggle to even get to the update service.

How do you make a PC super secure? Don't let it boot

A tweak to Windows Defender slowly creeping its way over PCs has an issue that can stop Windows 10 booting (and a few iterations of Windows Server – Microsoft points to Server 2016, but some users have reported problems with Server 2019).

Some admins have been in rollback city as dozens of users found their workstations unbootable.

I believe I know the reason behind: https://t.co/bhx5N9mL6D We had approx. 100 clients that have not booted afterwards. #secureboot — Schaetzer (@schaetzer) January 30, 2019

Tech author and blogger Günter Born took a look at the issue, and by the end of last week Microsoft had confirmed that there was a problem with the Windows Defender update and made a swift tweak to the issues list.

While problems with downloads being blocked due to a change in the file path location in the update have been known about for a while, that some Secure Boot-enabled Windows 10 PCs would fail to boot came as a surprise.

The issue results in affected Windows 10 PCs (or Windows Servers) not being able to start following a reboot. Microsoft's solution? Dive into the machine's BIOS and, er, disable that whole pesky Secure Boot thing.

Once back in Windows, Microsoft has provided users with commands to be run from a handy admin command prompt to stop Windows Defender pointing at the borked binary: 4.18.1901.7. Secure Boot can then be switched back on.

The gang at Redmond said they were working on the issue and plan to release a fix "in a future update", but gave no time frame.

Thanks to an eagle-eyed anonymous Reg reader for the tip.

Where, oh where has my Windows Update gone?

Some users may not have received the Windows Defender update at all as the service became inaccessible for a number of customers anxiously awaiting the next dollop of steaming goodness to drop from Redmond's update orifice.

Comcast customers in the US were the first to begin squeaking about the problem, filling the company's boards with complaints. Some users reported that manually switching to a different DNS provider appeared to cure the ill, hinting at something being amiss with Comcast's infrastructure.

The Register approached Comcast for comment and, while it did not respond to us, the issue was apparently quietly resolved.

However, because anything those pesky Americans can do, plucky Brits can do better, customers of UK telecoms giant BT also began reporting problems at the end of last week as the ISP protected users from downloading 1809 experienced symptoms similar to those of Comcast.

A forum posting with 130 messages at time of writing indicates that all is not well on this side of the pond for some customers. Like the Comcast problem, users have had some success after fiddling with their DNS settings, but other than confirming the issue was being investigated, BT has remained tight-lipped.

Perhaps he can sort out the DNS issue with BT broadband in the UK which is preventing Windows Update access including critical security updates to Windows Defender definitions. Usual "problem, what problem?" from customer services — Gary Streeter (@flyk6cr) February 4, 2019

The Register contacted BT to find out if it had anything to say on the matter but has yet to receive a response. A Redditor claiming to be a Microsoft engineer also posted, stating that the Windows giant was aware of the issue and would report back but Microsoft hasn't responded to our requests for comment.

While enterprising users have reported success with switching to Google's DNS, some remain unable to connect to the Windows Update service. And those virus definitions will be getting a bit old by now. ®

Updated to add

If you're still struggling with connecting to Windows Update, fear not. It was indeed a DNS issue. A spokesperson from Microsoft got in touch to tell us: "The Windows Update service was impacted by a data corruption issue in an external DNS service provider global outage on January 29, 2019. The issue was resolved on the same day and Windows Update is now operating normally, but a few customers have continued to report issues connecting to the Windows Update service. We expect these issues will go away as downstream DNS servers are updated with the corrected Windows Update DNS entries."


TOPICS: Business/Economy; Computers/Internet; Hobbies
KEYWORDS: defender; secureboot; windows; windows10; windows10update; windowspinglist; windowsupdate
Oopsie.
1 posted on 02/05/2019 7:57:57 AM PST by dayglored
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To: Abby4116; afraidfortherepublic; aft_lizard; AF_Blue; AppyPappy; arnoldc1; ATOMIC_PUNK; bajabaja; ...
Windows 10 / Defender Update No-Boot Woes... PING!

You can find all the Windows Ping list threads with FR search: just search on keyword "windowspinglist".

2 posted on 02/05/2019 7:58:39 AM PST by dayglored ("Listen. Strange women lying in ponds distributing swords is no basis for a system of government."`)
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To: dayglored

A little regression testing before you release might, at some point, be a process improvement that MS might consider implementing.


3 posted on 02/05/2019 8:05:45 AM PST by pepsi_junkie
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To: dayglored

Even Windows Defender knows Windows is a Virus


4 posted on 02/05/2019 8:12:10 AM PST by butlerweave
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To: dayglored

Windows Defender told me Windows Update was a virus.................


5 posted on 02/05/2019 8:13:55 AM PST by Red Badger (We are headed for a Civil War. It won't be nice like the last one....................)
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To: dayglored
How do you make a PC super secure? Don't let it boot

Well, that's one way...................works pretty good..............

6 posted on 02/05/2019 8:17:03 AM PST by Red Badger (We are headed for a Civil War. It won't be nice like the last one....................)
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To: pepsi_junkie

They are lazy bastards.

That’s what happens when you have a corporation full of millionaires.............


7 posted on 02/05/2019 8:17:58 AM PST by Red Badger (We are headed for a Civil War. It won't be nice like the last one....................)
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To: dayglored

Don’t be hatin! After all, that IS the safest way to run a Windows PC!


8 posted on 02/05/2019 9:47:21 AM PST by Still Thinking (Freedom is NOT a loophole!)
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To: dayglored

friends don’t let friends update their Windows PCs ... it’s the only way to maintain a semblance of stability ...


9 posted on 02/05/2019 12:15:41 PM PST by catnipman ((Cat Nipman: Vote Republican in 2012 and only be called racist one more time!))
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To: butlerweave; Red Badger

“Even Windows Defender knows Windows is a Virus”

“Windows Defender told me Windows Update was a virus.................”

Lol...


10 posted on 02/05/2019 12:19:04 PM PST by Openurmind
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To: dayglored
I think only a very small % of users use Secure Boot, yet in any case perhaps the best practice is to delay Windows update up to 35 days by going to Settings (hold down the Windows key and tap the i key) then hit Updates... and then Windows Update and Advanced and choose options.

W.10ProUpdateSet

11 posted on 02/05/2019 4:04:12 PM PST by daniel1212 (Trust the risen Lord Jesus to save you as a damned and destitute sinner + be baptized + follow Him)
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To: Red Badger

No, full of H1-Bs.


12 posted on 02/05/2019 5:07:49 PM PST by SgtHooper (If you remember the 60's, YOU WEREN'T THERE!)
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