Windows 11 24H2 might call time on that old NAS under the stairs

microsoft, windows, microsoft, windows 11 24h2 might call time on that old nas under the stairs

Windows 11 24H2 might call time on that old NAS under the stairs

Avoidance of evil intent means required SMB signing and no more guest fallback

Microsoft's Ned Pyle has issued a warning to Windows 11 24H2 users. Security has been tightened up, so attempting to access some third-party Network Attached Storage (NAS) devices or a USB drive plugged into certain routers might fail.…

Pyle, a principal program manager, has long been an advocate for driving a stake into the dark heart of earlier incarnations of the Server Message Block (SMB) protocol. For example, SMB1 is over 40 years old, and Pyle warned of its impending demise in 2022.

Windows 11 24H2 will take things further. According to Pyle, two changes have been made: SMB signing is now required by default on all connections, and guest fallback has been disabled on the Windows 11 Pro edition. The former prevents tampering on the network, while the latter improves security when connecting to an SMB server.

Pyle explains that Guest has been disabled because it lets the user connect to an SMB server with no username or password. While this state of affairs might be convenient for the maker of a NAS, as Pyle warns, "It means that your device can be tricked into connecting to a malicious server without prompting for credentials, then given ransomware or having your data stolen."

It has taken a while to get to this point. The Microsoft veteran noted that SMB signing had been available in Windows for 30 years, but its requirement by default on all connections was new. Similarly, Guest has been disabled in Windows for 25 years, and according to Pyle, SMB guest fallback has been disabled since Windows 10 in Enterprise, Education, and Pro for Workstation editions.

He said: "Both changes will make billions of devices more secure."

While the changes have been in the Windows Insider Dev and Canary builds for a year, some users excitedly upgrading to Windows 11 24H2 could get caught out.

Pyle explained: "There's one unavoidable consequence, though: we don't know when someone intended to be unsafe."

The changes mean that Windows won't know if an evil server is trying to do something horrid or if the user is simply trying to access some holiday snaps on an old NAS.

Either way, Windows 11 will respond with various error messages ranging from the helpful – "You can't access this shared folder because your organization's security policies block unauthenticated guest access. These policies help protect your PC from unsafe or malicious devices on the network" – to the downright obscure – "System error 3227320323 has occurred."

It is possible to turn off the changes, thereby making Windows less secure but regaining access to a device deemed unsafe. However, Pyle recommends upgrading the device, either through a software or firmware update or by replacing it.

Where a setting change, update, or replacement isn't an option, Microsoft is keen to name and shame.

Pyle said: "If you have a third party NAS device that doesn't support SMB signing, we want to hear about it. Please email [email protected] with the make and model of your NAS device so we can share with the world and perhaps get the vendor to fix it with an update." ®

OTHER NEWS

19 minutes ago

Italy need to learn killer instinct says Buffon after narrow win

19 minutes ago

Singapore golfer Shannon Tan encouraged by joint-3rd finish ahead of Olympics

19 minutes ago

What large car should you buy in 2024?

19 minutes ago

Netanyahu denounces tactical pauses in Gaza fighting to get in aid

19 minutes ago

Labour ready to launch GB Energy within days if it wins election

21 minutes ago

Russian Forces Claim New Village in Southern Ukraine

21 minutes ago

Disappointing end to Ukraine summit as allies agree to watered-down peace declaration

21 minutes ago

Ukraine keen to show its spirit at Euro 2024 with added motivation to advance

27 minutes ago

Recipe: Father’s Day grilled beef with potato salad and grilled asparagus

27 minutes ago

Conservative grassroots activists want JD Vance as Trump's VP pick: Straw poll shows Ohio senator as the runaway leader ahead of Rubio, Burgum and Scott among Turning Point Action attendees

28 minutes ago

Trump challenges Biden to take the same cognitive test that the former president took in 2018

29 minutes ago

Pliskova fights backs to reach Nottingham Open final

29 minutes ago

Dublin condemn Mayo to preliminary quarter-final after thrilling draw

29 minutes ago

Kevin Campbell obituary

29 minutes ago

Glenn Ryan steps down as Kildare manager following Tailteann Cup exit

29 minutes ago

Briton Draper wins first ATP Tour title in Stuttgart

29 minutes ago

I’ve spent £285,000 to become a single dad of three

29 minutes ago

President says libraries are facing 'censorship' due to 'intimidation by far-right groups'

29 minutes ago

XDefiant Players Sound Off About Their Least Favorite Factions To Play Against

29 minutes ago

Baldur's Gate 3 Player Creates Build Based On God of War's Kratos

30 minutes ago

Christian Eriksen does the impossible yet again in surreal full-circle moment at Euro 2024

32 minutes ago

ITV announces yet another schedule shake-up as flagship shows including Coronation Street and Emmerdale are pulled off-screen for the Euros 2024

33 minutes ago

Three-quarters of voters believe mega-rich Rishi Sunak is out of touch

33 minutes ago

Caitlin Clark Breaks The Internet With Pregame Outfit Before Fever-Sky

33 minutes ago

Amanda Holden posts adorable snap of husband Chris Hughes in sweet Father's Day tribute

33 minutes ago

'When he bats, dressing room is absolutely calm': Harbhajan Singh on India's biggest match-winner at T20 World Cup

33 minutes ago

Romania will fight for every metre on pitch against Ukraine, coach says

35 minutes ago

New 'Washington Post' chiefs can’t shake their past in London

38 minutes ago

Gary Neville warns England not to waste Trent Alexander-Arnold amid selection debate

38 minutes ago

David Beckham says children are his biggest achievement in life on Father’s Day

38 minutes ago

Sipke Hulshoff Expected To Join Liverpool As Arne Slot’s First Assistant

38 minutes ago

Houthis Use Sea Drones to Attack Vessels as U.S. Aims to Secure Red Sea

38 minutes ago

We dated a sacred Aboriginal women's site used for birthing ceremonies and discovered 7,000 years' worth of tool making

40 minutes ago

Questions left to answer for Italy after passing first Euros test

40 minutes ago

Your grandma’s foundation? It’s still a classic, plus 14 other timeless beauty staples

40 minutes ago

Blues must pick perfect problem solver

40 minutes ago

Why a three-legged lion made a record-breaking swim across a crocodile-infested river

40 minutes ago

Boom in cataract surgery in England as private clinics eye huge profits

40 minutes ago

Another Rugby World Cup-winning Springbok goes under the knife ahead of Test season

40 minutes ago

Supersub Wout Weghorst scores late again in Netherlands' 2-1 win over Poland at Euro 2024