Monday, February 19th 2024

Windows 11 24H2 Instruction Requirement Affects Older/Incompatible CPUs

Systems running on older hardware could be excluded from upcoming public versions of Windows 11—the recently released preview/insider build (26052) has introduced all sorts of new features including "Sudo for Windows", an improved regedit, and hidden beneath the surface, an AI-flavored Super Resolution settings menu. Early partakers of version 24H2 are running into instruction set-related problems—Windows operating expert, Bob Pony, was one of the unlucky candidates. Microsoft's preview code seems to require a specific instruction set to reach operational status—Pony documented his frustrations on social media: "Using the command line argument "/product server" for setup.exe, BYPASSES the system requirement checks for the Windows 11 24H2 setup program. But unfortunately, after setup completes then reboots into the next stage. It'll be indefinitely stuck on the Windows logo boot screen."

He continued to narrow in on the source of blame: "Windows 11 Version 24H2 Build 26058's setup (if ran in a live Windows Install) now checks for a CPU instruction: PopCnt." The Register provided some history/context on the SSE4 set: "POPCNT/PopCnt counts the number of bits in a machine word that have been set (or different from zero.) You might see it in cryptography and it has been lurking in CPU architectures for years, pre-dating Intel and AMD's implementation by decades." It is believed that Microsoft has deployed PopCnt as part of its push into AI-augmented software features, although a segment of online discussion proposes that an engineer has "accidentally enabled" newer CPU instruction sets. Tom's Hardware marked a line in the sand: "PopCnt has been supported since the Intel Nehalem and AMD Phenom II (microarchitecture) era—14 years ago—so compatibility won't be an issue for any modern systems. The only users that will be affected are enthusiasts running modified versions of Windows 11 on 15+ year-old chips like Core 2 Duos or Athlon 64." Bob Pony's long-serving Core 2 Quad Q9650 processor—a late summer 2008 product—was deemed unworthy by the preview build's setup process.
Sources: Bob Pony, The Register, NeoWin, Tom's Hardware
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104 Comments on Windows 11 24H2 Instruction Requirement Affects Older/Incompatible CPUs

#51
piffdaddy
OnasiSeeing how much outrage was even here, on TPU, in the Windows 11 thread, you would think that there is a giant amount of hidden mole people just itching at the bit to run a 2024 OS on outdated hardware.
In reality? This is a nonissue. Any PC with CPU affected isn’t worth running 11 on anyway.
You are so right!
3valatzyAthlon 64 no because it's very slow for internet browsing, but I don't see how the powerful for the time Core 2 Quad Q9650 processor could be labeled not decent for running Windows system?!
This is artificial obsolescence because of the greed.
Windows 11 shouldn't have existed in the first place.
even my 70 year old father in law is using hardware that meets these requirements. that Q9650 is ancient by todays standards.
Who cares if that processor could theoretically run windows 11. Anyone using that doesn't need windows 11 and likely doesn't even know what windows 11 is
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#52
Dr. Dro
sLowEndI’m pretty averse to recommending to most people anything that pre-dates AVX2
Yeah, Haswell seems like a fair cutoff. It's 11 years old by now, and even the server versions of it have become so incredibly affordable that it works well as a bare minimum platform target for me to recommend.

Older hardware can stay on older operating systems just fine, and you can always find use for them. Old Mac mini computers make for great emulation machines, for example.
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#53
Lauri
If you don't want to buy new hardware you can instead use that same money to get a Windows 10 IoT Enterprise LTSC 2021 lisence and have support until 2032. Normal LTSC has support until 2027, but that is clearly too soon to give up on a working Core 2 Quad computer. Too bad Windows 11 LTSC will be based on that same 24H2 that doens't work.
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#54
Wirko
I remember reading long ago (possibly at Anand's) that Core 2's performance was rather poor when running 64-bit code. Can't find any good source or benchmarks now, just a confirmation that it lacks an important optimisation (macro-op fusion) in 64-bit mode. Nehalem had that. That's one more reason to avoid 64-bit OSes on Core 2, which obviously includes Windows 11.
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#55
TheDeeGee
ZoneDymoI mean if you dont do much other then watching youtube and word processing...you dont really need much more tbh
Then you don't need Windows 11 either, Linux is enough then.
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#56
Readlight
sLowEndI’m pretty averse to recommending to most people anything that pre-dates AVX2
That CPU used costs 100 euro.
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#57
Dr. Dro
ReadlightThat CPU used costs 100 euro.
Anyone dropping 100 euros on a 1100T is out of their gourd, it's an ancient CPU. It's the highest-end Phenom II model, though, so it will always have a market for people trying to build an era-specific machine. Although I'd argue buying an used Gulftown/Westmere processor is a way better deal (since the i7-980X was over twice as fast anyway), and they can easily be found for half that much.
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#58
xtreemchaos
i think that Microsoft is thick , a customer is a customer why would thay want to cull a % of us. a smart company would just let it be with disclaimers.
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#59
Onasi
xtreemchaosi think that Microsoft is thick , a customer is a customer why would thay want to cull a % of us. a smart company would just let it be with disclaimers.
The vast majority of Windows users aren’t DIY enthusiasts. They buy laptops and prebuilts. More systems sold - more kickback to MS for pre-installed OS. They know fully well what they are doing. Remember, the licenses are HW bound.
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#61
Jonny5isalivetm5
mtosevWho in the year 2024 would ran Windows 11 on core 2 duos/quads and Athlon 64 systems?
My Wifes ole core 2 duo laptop :P Well it might be win10 but it has turned into a Batman player for our 18month old :P
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#62
R0H1T
Dr. DroAnyone dropping 100 euros on a 1100T is out of their gourd, it's an ancient CPU. It's the highest-end Phenom II model, though, so it will always have a market for people trying to build an era-specific machine. Although I'd argue buying an used Gulftown/Westmere processor is a way better deal (since the i7-980X was over twice as fast anyway), and they can easily be found for half that much.
You can wear it around your neck or a key chain, like those broken(?) Vega dies :pimp:

Pretty sure it could fetch $100 as a fashion accessory!
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#63
Unregistered
mtosevWho in the year 2024 would ran Windows 11 on core 2 duos/quads and Athlon 64 systems?
Yeah, Windows 8/10/11 are to bloated for almost 18 year old rigs. Especially since there's tons of Linux distros (up to date too) - which are actually optimized even for old systems - and use incomparably less resources (better spend elsewhere). Even so, on a rig with 8Gb ram + GTX 1050 TI could even handle some casual gaming (especially older titles). Something like...


Not adequate for a modern days gamer - who's always looking out for the latest titles (to install, try and never finish - unless it's one of those rare games that's captivating from beginning to end) - but definitely good enough for a nostalgic gamer (who finds joy in replaying old titles) - or even one of those online gamers - who plays only titles with potato requirements (like Counterstrike and LoL - only games they ever play - but still identify as gamers... even hard core games - just because they spend 12 hours a day fighting their personal demons).

What boggles me the most... those masochists who yearn to install Windows 11 on those tablet-like hybrids which come with Intel toy-like CPUs and 2GB Ram.
#64
Random_User
TartarosI'm sorry, but we would be still using Color Macintoshes, Amigas and 486s if this was true. And Color Macs, Amigas and 486s are cool, but let's not pretend they would work flawlessly today, just counting the things we normally do on computers like watching videos at resolutions that would be considered ludicrous at the time, for example. And also the most popular consumer OS means the most targeted OS for all kinds of bad actors because of it's sheer user base, so yeah, a lot of those things makes Windows slow have to do with security, hackers didn't stop at the Chernobyl virus. Remember when Meltdown and Spectre needed patches that brought to its knees modern processors about 5 years ago? I surely do.

If you want to keep using a very old system out of necessity, I'm sorry, that sucks and I know for certain you would change that if you could. Fortunately there are a lot of good people out there who try to give breath to it just doing Windows debloats or Linux distros, but things move foward.
Where I've said there shouldn't be the progress? I've said, there's a lot of HW, that is completely viable.

I'm fed with the "security" argument. This is marketing BS to trick people into even more built-in data mining. There's no secure systems. And MS Windows, not the secure OS. And especially W11, which is a resouce hog, but it doesn't give any advantage. There's a lot of really dangerous blotware, that serves no good purpose. At this point they could make security patches for W7, as the windows core is still ancient, and it still would be more secure than W11. The Defender itself is a swiss cheese, that behaves as a Win32 troyan. It gives a lot of false-positives, while truly dangerous stuff can come in like no big deal. And Defender's Firewall only hampers the work of completely safe programs. There's no way to make Windows more secure, if MS made so many holes intentionally in the first place. Heck even Linux is not secure completely. Just don't go to malicious sites.

My point is, the MS Windows is infamous for inflating their specs out of no good reasons. As mentioned above, the core features, services and programs in Windows are still ancient, outdated and sometimes broken. The main thing tha being pushed as reason, is AI/Copilot. And how many people need that, or can opt-out? And that thing is another security loop-hole by it's own. Not only it gives complete access to all the user's data to MS and any thrird-party, but there's no clearness about how it's being used, and what it does itself. How such OS and devices can be treated as safe and "secure"?

The lack security is not only SW/HW problem, it's the behavioural issue. And it's big companies with valuable data, that are primary targets. And the companies should have everything backed up and decoupled from the internet access in the first place. And if they not...

And about HW. Those CPUs were taxed heavilly, in order to close the holes. So they ended up loosing that preformance "advantage" over older counterparts, in order to close the known security holes. Surely the more secure architecture and instructions sets should be present in CPU, and the HW overall must be up to date. But then again, for many stuff that people use, there shouldn't be a concern. And if the popular resourses like YT or social media like reddit, etc are not secure, then, there's nothing else much left to do. As these resourses should be giving only proven and tested data.
And neither UEFI, nor TPM, are anywhere more "secure" than lagacy BIOS, and give no real benefits. TPM is just the addition for the HDCP that intrudes to check if there's no pirated content. How that's needed, if people use official software and HW? And the pirates, will find their way, in any case.
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#65
xtreemchaos
taking a choice away is bad all round, yes not every body is enthusiasts but its nice to have the choice. im not a betting man but id bet my left nut some one will come up with a work around.
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#66
Onasi
Random_UserAnd MS Windows, is not the secure OS.
Just to put things into perspective, an up to date version of Windows with an up to date browser and an up to date Defender/Security Center is about as secure as a consumer desktop OS can possibly be nowadays. The reason why MacOS and especially Linux are theoretically more secure is simply from the fact that the user base is infinitely smaller and there is less incentive to write malware for.
But as you correctly said, the vast, vast majority of all security threats stem from the user behavior. Actually getting malware on a modern OS without the user themselves going to a shady site/clicking on a shady link/downloading a shady executable is extremely difficult. We are not in the Windows XP times anymore.
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#67
phints
Halo3AddictWhy is everyone so up in arms.. it is an instruction that has been in CPUs for 15 years..
Because the internet whines and cries and complains about everything. These idiots can run their garbage Win10 forever if they want, with it's sluggish performance, ancient UI, and forgetting it was a dumpster fire at launch too. Win11 is awesome on my gaming PC and business laptop, I would never go back to that ugly UI and not having File Explorer with tabs.

I have Linux on my phone and router (OpenWrt is awesome), but its desktop experience is garbage, still doesn't even have a unified packaging system and Gnome doesn't even have a taskbar. Complaining about an AI feature that is easy to disable on the best OS available, then suggesting an old MS OS, or Linux? Gtfo.
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#68
Jonny5isalivetm5
xtreemchaostaking a choice away is bad all round, yes not every body is enthusiasts but its nice to have the choice. im not a betting man but id bet my left nut some one will come up with a work around.
Its a hardware issue this time tho not software so highly unliekly to be worked around but yes be cool to see :D
Posted on Reply
#70
ThrashZone
xtreemchaostaking a choice away is bad all round, yes not every body is enthusiasts but its nice to have the choice. im not a betting man but id bet my left nut some one will come up with a work around.
Hi,
Yeah thinking MS has been taking notes of to many leather jacket man commercials saying just buy rtx lol
In MS world that means new disposable hardware that likely won't last 2-3 years because it's made so cheap but price sure doesn't reflect it's poor construction one bit.

These old chips are still around because they were made better than some newer stuff is and the old saying is, If it ain't broke, don't fix it :doh:
Can also be said, If a system still works why replace it.

TPM no piracy scans are malicious software removal tools job :laugh:
Posted on Reply
#72
trparky
ThrashZoneThese old chips are still around because they were made better than some newer stuff is and the old saying is, If it ain't broke, don't fix it :doh:
Can also be said, If a system still works why replace it.
Yes, but there comes a time when regardless of whether or not you can run an alternative operating system, third-party programs can become so computationally heavy that older hardware just can't handle it. Web browsers are very famous examples of this scenario what with how modern browsers spawn so many secondary processes and threads that not only consume a lot of CPU cycles but also a lot of RAM.

These days, I wouldn't even dream of running a system running modern software with anything less than 8 GBs of RAM, 16 GBs is preferable.
Posted on Reply
#73
ThrashZone
xtreemchaostotally agree bud.
Hi,
Mother boards are definitely made better back then
More chips killed by crappy newer mother board and their bios than anything else.
Posted on Reply
#74
Dr. Dro
R0H1TYou can wear it around your neck or a key chain, like those broken(?) Vega dies :pimp:

Pretty sure it could fetch $100 as a fashion accessory!
Maybe if you remove all of those PGA pins :D
Posted on Reply
#75
Luke357
XSAlliNWhat boggles me the most... those masochists who yearn to install Windows 11 on those tablet-like hybrids which come with Intel toy-like CPUs and 2GB Ram.
I feel called out lol. On a different site I made a post about installing Win11 on my Surface 3 with an Intel Atom and 2GB of RAM. It's not as bad as you'd think with the right tweaks.
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