Solved Windows 11 24H2 has un-bypassable hardware requirements...

Bree · Jun 4, 2024

spapakons said:
CPUs from about 2012 or newer will happily run 24H2 as they do have SSE4.2 and PopCnt. Anything older will not unless a workaround is found.

My System Two has a 1st gen Intel Core i5-520M that's from 2010, that was one of the first Intel CPUs to have SSE4.2....

spapakons said:
For 24H2 the only boot method is UEFI mode, but you can boot in Legacy BIOS mode if you replace the Windows bootloader with that of 23H2.

My System Two boots to 23H2 in Legacy mode, but it can dual boot 24H2 as a native boot .vhdx, so that's another possible way to run 24H2 on a Legacy BIOS machine.

Silvio · Jun 12, 2024

We are temporarily pausing the rollout of Windows 11, version 24H2 to the Release Preview Channel.

TM21 · Jun 12, 2024

Maybe, but, the version of 24H2 that I have, works just great!
Yes, my CPU does have the SSE4.2 Instruction Set. It was made in 2012.

intex · Sep 15, 2024

I have 2 questions.
1 - Is not using TPM 2.0 a real security risk?
2 - Does any software require TPM to run?

Berton · Sep 15, 2024

I cloned a Win10 drive in a 2014 Notebook with older CPU and No TPM then installed Win11 using one of the 'tweaks', it worked and I didn't see any issue with the programs themselves.

jimbo45 · Sep 15, 2024

Install with dism /Apply-Image ---Still no problem whtsoever.

Cheers
jimbo.

intex · Sep 15, 2024

Berton said:
I cloned a Win10 drive in a 2014 Notebook with older CPU and No TPM then installed Win11 using one of the 'tweaks', it worked and I didn't see any issue with the programs themselves.

Does TPM affect performance in any way?

OAT · Sep 15, 2024

intex said:
I have 2 questions.
1 - Is not using TPM 2.0 a real security risk?
2 - Does any software require TPM to run?

1- Yes, this is why it was implemented in the first place.
2- Yes, some Windows games do require TPM : Valorant is enforcing Windows 11’s security features

Does TPM affect performance in any way? nope

spapakons · Sep 15, 2024

TPM 2.0 is an additional security measure that strengthens security. Without it you rely on Windows Defender (or other third-party antivirus) and on Common Sense. The latter means you don't click everything you see on screen without reading it just to get rid of a pop-up window. That's exactly what hackers count on, that most will just click OK without reading giving them permission to install their backdoor or whatever else. As far as I know no software demands TPM 2.0 in order to function but they can use it if enabled.

TraderGary · Sep 15, 2024

If you're using Windows 11, Windows Hello face and fingerprint recognition require TPM 2.0, as does BitLocker and Secure Boot. That's where the keys are stored.

garlin · Sep 15, 2024

OAT said:
1- Yes, this is why it was implemented in the first place.
2- Yes, some Windows games do require TPM : Valorant is enforcing Windows 11’s security features

Valorant doesn't need TPM support. The real reason is Riot Games wants to stop "cheat apps" by having Windows run Secure Boot.

Both cheat apps and Valorant's anti-cheat tools run as kernel-level drivers, which can inspect what other processes are doing. When Secure Boot is enabled, Windows security protections will block the cheat apps since they can't pass the same driver verification. Since Windows is acting as the "enforcer", game publishers don't have to worry about players running cheat apps.

spapakons · Sep 16, 2024

TraderGary said:
If you're using Windows 11, Windows Hello face and fingerprint recognition require TPM 2.0, as does BitLocker and Secure Boot. That's where the keys are stored.

I think these also work without TPM 2.0, I may be wrong though.

Gregory · Sep 17, 2024

TechnoMage2021 said:
Maybe, but, the version of 24H2 that I have, works just great!
Yes, my CPU does have the SSE4.2 Instruction Set. It was made in 2012.

Then you are not the person that he could tell us what will happened if someone try to install win11 24h2 to an old pc with a cpu without sse4.2.

When this build official released i believe it is 2023-10-31 will see what will happened and if we can install it to old cpu without sse4.2.

Bree · Sep 17, 2024

Gregory said:
you are not the person that he could tell us what will happened if someone try to install win11 24h2 to an old pc with a cpu without sse4.2.

...no, but I am. I tried it back in February, shortly after MS first introduced this new requirement (build 26052.1000).

Bree said:
Of my eight or so unsupported devices that can run 23H2, I have two with CPUs that are missing the PopCnt instruction, so can't run 24H2, one is an Intel Atom N2600, the other a Pentium Dual-Core T4300.....

....what I have tried (and failed at) is native booting a .vhdx of 24H2 Canary on one of these CPUs, copied from my Dell 3190, a supported device that runs it successfully. It won't boot - just gets as far as the Windows logo before it fails and reboots, doesn't even get as far as the spinning circle.

....to be sure the .vhdx was not at fault, here it is, running on a really old Pentium B950 from Q2 '11, but that does have SSE4.2/PopCnt....

Let's install Windows 11 on incompatible hardware - post #1,917

Gregory said:
When this build official released i believe it is 2023-10-31 will see what will happened and if we can install it to old cpu without sse4.2.

Nothing has changed since then, 24H2 is still incapable of booting without SSE4.2.

XxXxX · Sep 17, 2024

there seems to be away of emulating SSE4.2 via QEMU which seems to be able to install 24H2 on non compliant systems.
at the moment there is not a lot of detail about but i have no doubt that will change shortly.

hope this helps, best of luck. Steve ..

Marcus Vinicus · Sep 17, 2024

spapakons said:
I think these also work without TPM 2.0, I may be wrong though.

MS say that Windows Hello can be made to work without TPM but it isn't recommended as it isn't as secure.

TPM needed for Windows Hello/Windows Hello for Business, or not. - Microsoft Q&A

Hi all, I appreciate some clarification here. Previously, in my learning for SC-900, I understand that Windows Hello works with TPM to ensure that even if the threat actor knows the PIN, unless it has the hardware, he/she will not be able to access…

learn.microsoft.com

spapakons · Sep 17, 2024

The real test will be on a CPU without SSE4.2, such as the Intel Core 2 Duo of my test laptop (see 1st system specs). I will clone the current 23H2 installation on a spare SSD and then try to upgrade. If upgrading is not possible l, I will try to clean install 24H2. I will report any results and how I did it, if I succeed.

PS: In theory it is possible to install 24H2 on an unsupported CPU with Dism or using a hybrid 23H2/24H2 USB flash drive. The challenge is to boot into 24H2 and actually use it on an unsupported CPU.

WAI · Sep 17, 2024

spapakons said:
The real test will be on a CPU without SSE4.2, such as the Intel Core 2 Duo of my test laptop (see 1st system specs). I will clone the current 23H2 installation on a spare SSD and then try to upgrade. If upgrading is not possible l, I will try to clean install 24H2. I will report any results and how I did it, if I succeed.

PS: In theory it is possible to install 24H2 on an unsupported CPU with Dism or using a hybrid 23H2/24H2 USB flash drive. The challenge is to boot into 24H2 and actually use it on an unsupported CPU.

I know someone out there once the 24H2 is released it's only a matter of time till someone creates the ISO for us

garlin · Sep 17, 2024

WAI said:
I know someone out there once the 24H2 is released it's only a matter of time till someone creates the ISO for us

Not unless they know how to defeat MS code signing. If you disable kernel protections for boot files, you can boot any modified files at the cost of having no malware protection.
But hey... it's worth it?

WAI · Sep 17, 2024

garlin said:
Not unless they know how to defeat MS code signing. If you disable kernel protections for boot files, you can boot any modified files at the cost of having no malware protection.
But hey... it's worth it?

Well we'll see. I know of a iso that has defender removed (and other things) and it's more snappy

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