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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AllenChicago

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cereberus

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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
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z3r010

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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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jimbo45

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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.
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
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Bree

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jimbo45

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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
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Bree

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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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    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.


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dbartenstein

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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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jimbo45

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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
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Dru2

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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.

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

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