SMB1 now disabled by default for Windows 11 Home Insiders builds


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Heya folks, Ned here again. I have a pretty big announcement: we've started the final phase of disabling SMB1 in Windows.

As you probably know, we began shipping Windows 10 and Windows Server with SMB1 not installed by default in RS3, the "Fall Creators Update" of 2017. Initially, we stopped installing the SMB1 server service in any editions of Windows and stopped installing the SMB1 client service in most editions of Windows. Home and Pro editions still had the client so users could connect to the vast fleet of consumer and small business third-party NAS devices that only supported SMB1. If the client didn't see any outbound use of SMB1 after total 15 days of uptime, it would then automatically uninstall it. In RS5 - version 1809 - we stopped installing SMB1 client in Pro editions.

And now the time has come to end the last remaining piece. If you install a Windows Insider Dev channel build in any variant of Home Edition, the SMB1 client isn't installed.

large


This means there is no edition of Windows 11 Insider that has any part of SMB1 enabled by default anymore. At the next major release of Windows 11, that will be the default behavior as well. Like always, this doesn't affect in-place upgrades of machines where you were already using SMB1. SMB1 is not gone here, an admin can still intentionally reinstall it.

This is not the final story, though: I am also announcing that we are going to remove the SMB1 binaries in a future release. Windows and Windows Server will no longer include the drivers and DLLs of SMB1. We will provide an out-of-band unsupported install package for organizations or users that still need SMB1 to connect to old factory machinery, medical gear, consumer NAS, etc. - I'll have more details on this in a few months.

I had to save this Home edition behavior for last, it's going to cause a consumer pain among folks who are still running very old equipment, a group that's the least likely to understand why their new Windows 11 laptop can't connect to their old networked hard drive. I'll spread this word throughout consumer channels as best I can - I hope you can help me with friends and family who rely on you for technical expertise.

Until next time,
- Ned Pyle


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I can understand disabling it, and even making it an optional feature, but removing it completely. It is unclear what the blog means

We will provide an out-of-band unsupported install package for organizations or users........

That basically says "if package does not work - tough luck"

It is arrogant of MS to entirely remove it.
 

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Hi there

That's Bonkers -- there's zillions of bits of hardware especially Home kit that requires SMB1 to work for connectivity. Even some packages on smart TV's e.g Kodi or VLC need SMB1 for accessing media on a LAN / remote computer and many bog standard Windows machines need it too to connect to other machines. There's still for example a huge number of W7 systems out there.

I'm finding these days that apart from Ms Office, Video "Capture with editing" and Photoshop type of stuff my need for Windows is rapidly decreasing by the month. I mainly now use Windows on Virtual machines - with decent hardware and proper setup you can get to pretty well native performance these days using Virtual Machines.

I believe though the feature won't be removed from the Server versions of Windows -- I might go back to using those --you can turn them into Desktops quite easily and you get 180 days free trial with the latest ones. No big deal to re-install every half year !!!- actually Windows server 2022 e.g build 25083 LTSC is really slick if people want to try it -- although it's missing some HP laser printer drivers so just send your print (pdf/docx/xlsx or whatever) over to a VM or stand alone Network printer.

Did Ms actually do any market research on seeing if there was either a demand or even a need for it.
If it's a security bother then Ms can presumably beef up the firewall or WD or preferably both. In any case often on purely domestic machines the problem of security is often blown out of all proportions - but that's another whole different topic.

cheers
jimbo
 

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I'm with Microsoft on this one, SMB1 should have gone years ago, but lazy devs continue using it to this day, removing it from future builds gives them a push to use a modern secure sharing protocol while allowing legacy users an addon that can be installed if you really need it.

I don't really see why anybody would have a problem, this is just progress to a more secure future.
 

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    Windows 11 Workstation
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    doofenshmirtz evil incorporated
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    Ryzen 9 5950X
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    Asus ROG Crosshair VIII Formula
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    Corsair Vengeance RGB PRO Black 64GB (4x16GB) 3600MHz AMD Ryzen Tuned DDR4
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    Sound BlasterX Katana
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    3 x27" Dell U2724D & 1 x 34" Dell U3415W
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    ASUS ROG THOR 850W 80 Plus Platinum
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    ASUS ROG Strix Helios Midi-Tower ARGB Gaming Case
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    ASUS ROG Strix LC Performance RGB AIO CPU Liquid Cooler - 360mm
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    Logi Ergo
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    Logitech MX Master 3
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    900/100 Mbps
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    Chrome
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    Windows Defender, Malwarebytes Pro
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    HP M281 Printer
    Logitech Brio Stream webcam
    Yeti X mic
  • Operating System
    Windows 10
    Computer type
    Laptop
    Manufacturer/Model
    Surface Laptop
    CPU
    i7
I'm with Microsoft on this one, SMB1 should have gone years ago, but lazy devs continue using it to this day, removing it from future builds gives them a push to use a modern secure sharing protocol while allowing legacy users an addon that can be installed if you really need it.

I don't really see why anybody would have a problem, this is just progress to a more secure future.
I don't think anybody has a problem (or shouldn't have) if it's still going to be available as an installable working option.

My experience though with Windows Networking is that it probably requires not only the wisdom of Gandalf the Wizard but his sorcery as well to get it working properly.

Cheers
jimbo
 

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    Windows XP,7,10,11 Linux Arch Linux
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    PC/Desktop
    CPU
    2 X Intel i7

My Computers

System One System Two

  • OS
    Windows 11 Home
    Computer type
    Laptop
    Manufacturer/Model
    Acer Aspire 3 A315-23
    CPU
    AMD Athlon Silver 3050U
    Memory
    8GB
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    laptop screen
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    1TB Samsung EVO 870 SSD
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    50 Mbps
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    Edge, Firefox
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    fully 'Windows 11 ready' laptop. Windows 10 C: partition migrated from my old unsupported 'main machine' then upgraded to 11. A test migration ran Insider builds for 2 months. When 11 was released on 5th October it was re-imaged back to 10 and was offered the upgrade in Windows Update on 20th October. Windows Update offered the 22H2 Feature Update on 20th September 2022. It got the 23H2 Feature Update on 4th November 2023 through Windows Update.

    My SYSTEM THREE is a Dell Latitude 5410, i7-10610U, 32GB RAM, 512GB ssd, supported device running Windows 11 Pro (and all my Hyper-V VMs).

    My SYSTEM FOUR is a 2-in-1 convertible Lenovo Yoga 11e 20DA, Celeron N2930, 4GB RAM, 256GB ssd. Unsupported device: currently running Win10 Pro, plus Win11 Pro RTM and Insider Beta as native boot vhdx.

    My SYSTEM FIVE is a Dell Latitude 3190 2-in-1, Pentium Silver N5030, 4GB RAM, 512GB NVMe ssd, supported device running Windows 11 Pro, plus the Insider Beta, Dev, and Canary builds as a native boot .vhdx.
  • Operating System
    Windows 11 Pro
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    Dell Lattitude E4310
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    Intel® Core™ i5-520M
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    0T6M8G
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    8GB
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    unsupported machine: Legacy bios, MBR, TPM 1.2, upgraded from W10 to W11 using W10/W11 hybrid install media workaround. In-place upgrade to 22H2 using ISO and a workaround. Feature Update to 23H2 by manually installing the Enablement Package.

    My SYSTEM THREE is a Dell Latitude 5410, i7-10610U, 32GB RAM, 512GB ssd, supported device running Windows 11 Pro (and all my Hyper-V VMs).

    My SYSTEM FOUR is a 2-in-1 convertible Lenovo Yoga 11e 20DA, Celeron N2930, 4GB RAM, 256GB ssd. Unsupported device: currently running Win10 Pro, plus Win11 Pro RTM and Insider Beta as native boot vhdx.

    My SYSTEM FIVE is a Dell Latitude 3190 2-in-1, Pentium Silver N5030, 4GB RAM, 512GB NVMe ssd, supported device running Windows 11 Pro, plus the Insider Beta, Dev, and Canary builds as a native boot .vhdx.
If you'd said 'XP' I'd agree with you. SMB 2.0 was introduced with Vista, and Windows 7 supports SMB 2.1.

I'm thinking of some NAS type devices -- OK I can re-install the OS - but that's sometimes a pain and of course the clients computers accessing it-- and what about some older QNAP proprietary things and some stand alone printers / disk drives in a network.

Cheers
jimbo
 

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I'm thinking of some NAS type devices --
On my network the one and only shared device that requires SMB1 to access it is an external HDD plugged into the USB port of my ISP-supplied router (a sort of poor man's NAS).
 

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  • OS
    Windows 11 Home
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    Laptop
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    Acer Aspire 3 A315-23
    CPU
    AMD Athlon Silver 3050U
    Memory
    8GB
    Graphics Card(s)
    Radeon Graphics
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    laptop screen
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    1366x768 native resolution, up to 2560x1440 with Radeon Virtual Super Resolution
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    1TB Samsung EVO 870 SSD
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    50 Mbps
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    Edge, Firefox
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    Defender
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    fully 'Windows 11 ready' laptop. Windows 10 C: partition migrated from my old unsupported 'main machine' then upgraded to 11. A test migration ran Insider builds for 2 months. When 11 was released on 5th October it was re-imaged back to 10 and was offered the upgrade in Windows Update on 20th October. Windows Update offered the 22H2 Feature Update on 20th September 2022. It got the 23H2 Feature Update on 4th November 2023 through Windows Update.

    My SYSTEM THREE is a Dell Latitude 5410, i7-10610U, 32GB RAM, 512GB ssd, supported device running Windows 11 Pro (and all my Hyper-V VMs).

    My SYSTEM FOUR is a 2-in-1 convertible Lenovo Yoga 11e 20DA, Celeron N2930, 4GB RAM, 256GB ssd. Unsupported device: currently running Win10 Pro, plus Win11 Pro RTM and Insider Beta as native boot vhdx.

    My SYSTEM FIVE is a Dell Latitude 3190 2-in-1, Pentium Silver N5030, 4GB RAM, 512GB NVMe ssd, supported device running Windows 11 Pro, plus the Insider Beta, Dev, and Canary builds as a native boot .vhdx.
  • Operating System
    Windows 11 Pro
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    Laptop
    Manufacturer/Model
    Dell Lattitude E4310
    CPU
    Intel® Core™ i5-520M
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    0T6M8G
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    8GB
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    (integrated graphics) Intel HD Graphics
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    1366x768
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    500GB Crucial MX500 SSD
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    Defender
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    unsupported machine: Legacy bios, MBR, TPM 1.2, upgraded from W10 to W11 using W10/W11 hybrid install media workaround. In-place upgrade to 22H2 using ISO and a workaround. Feature Update to 23H2 by manually installing the Enablement Package.

    My SYSTEM THREE is a Dell Latitude 5410, i7-10610U, 32GB RAM, 512GB ssd, supported device running Windows 11 Pro (and all my Hyper-V VMs).

    My SYSTEM FOUR is a 2-in-1 convertible Lenovo Yoga 11e 20DA, Celeron N2930, 4GB RAM, 256GB ssd. Unsupported device: currently running Win10 Pro, plus Win11 Pro RTM and Insider Beta as native boot vhdx.

    My SYSTEM FIVE is a Dell Latitude 3190 2-in-1, Pentium Silver N5030, 4GB RAM, 512GB NVMe ssd, supported device running Windows 11 Pro, plus the Insider Beta, Dev, and Canary builds as a native boot .vhdx.
Hum. It was on in my main system, but I don't remember ever turning it on... I unchecked it and after the reboot I noted that it took a few seconds longer for my 2 mapped drives to get connected; USB drives on my Nighthawk router...
 

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    Intel(R) Core(TM) i5-9300H CPU @ 2.40GHz 2.40 GHz
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    32GB
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    Dell E6430
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    Intel(R) Core(TM) i7-3540M CPU @ 3.00GHz 3.00 GHz (non-compliant)
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    Windows Defender
On my network the one and only shared device that requires SMB1 to access it is an external HDD plugged into the USB port of my ISP-supplied router (a sort of poor man's NAS).
In a NAS where you can get access to the SAMBA config fle then it's OK simply change the [Global] section


[global]
min protocol = NT1 =<==============================that's SMB1
# can set it to SMB2/3 etc as required
#
workgroup = VIKINGURS
server string = Samba Server Version %v

; max protocol = SMB2 <============================== set that to whatever level you need

However not so simple for some older QNAP systems where you don't or only with difficulty get access to those files.

Cheers
jimbo
 

My Computer

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    Windows XP,7,10,11 Linux Arch Linux
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    PC/Desktop
    CPU
    2 X Intel i7
I'm with Microsoft on this one, SMB1 should have gone years ago, but lazy devs continue using it to this day, removing it from future builds gives them a push to use a modern secure sharing protocol while allowing legacy users an addon that can be installed if you really need it.

I don't really see why anybody would have a problem, this is just progress to a more secure future.

Agree. Thankfully my Western Digital 4-bay NAS (PR4100) doesn't require it either.
 

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    Windows 11 Pro 23H2 (Build 22631.3296)
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    PC/Desktop
    Manufacturer/Model
    Custom built
    CPU
    Intel i9-9900K
    Motherboard
    Gigabyte Aorus Z390 Xtreme
    Memory
    32G (4x8) DDR4 Corsair RGB Dominator Platinum (3600Mhz)
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    Radeon VII
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    Onboard (ESS Sabre HiFi using Realtek drivers)
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    NEC PA242w (24 inch)
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    1920 x 1200
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    5 Samsung SSD drives: 2X 970 NVME (512 & 1TB), 3X EVO SATA (2X 2TB, 1X 1TB)
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    Cooler Master H500M
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    Corsair H115i RGB Platinum
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    Logitech Craft
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    500mb Download. 11mb Upload
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    Microsoft Edge Chromium
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    Windows Security
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    System used for gaming, photography, music, school.
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    Win 10 Pro 22H2 (build 19045.2130)
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    PC/Desktop
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    Custom Built
    CPU
    Intel i7-7700K
    Motherboard
    Gigabyte GA-Z270X-GAMING 8
    Memory
    32G (4x8) DDR4 Corsair Dominator Platinum (3333Mhz)
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    AMD Radeon R9 Fury
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    Onboard (Creative Sound Blaster certified ZxRi)
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    Dell U2415 (24 inch)
    Screen Resolution
    1920 x 1200
    Hard Drives
    3 Samsung SSD drives: 1x 512gig 950 NVMe drive (OS drive), 1 x 512gig 850 Pro, 1x 256gig 840 Pro.
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    EVGA Super Nova 1000 P2 (1000 watt)
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    Phantek Enthoo Luxe
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    Corsair H100i
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    Logitech MX Master
    Keyboard
    Logitech MK 710
    Internet Speed
    100MB
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    Edge Chromium
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    Windows Security
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    This is my backup system.

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