Will I be Able to Install Windows 24H2 ? POPCNTS?


PvtJohnTowle

PvtJohnTowle

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Windows 11 Pro 25H2 26200.9278
https://www.reddit.com/r/Windows11/comments/1e6q46g/so_how_badly_really_do_windows_11_require_the

As we all know, the latest version of Windows 11 no longer runs on some old CPUs. The affected CPUs are the ones missing SSE 4.2 instructions, POPCNT in particular.
Click to expand...

www.tomshardware.com

Existing workarounds fail with new Windows 11 requirement that invalidates older CPUs — Microsoft's PopCnt restriction appears to be unbreakable

Sorry, you can no longer run Windows 11 on your Core 2 Duo
www.tomshardware.com www.tomshardware.com

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's.
Click to expand...
 

My Computers My Computers

System One System Two

  • At a glance

    Windows 11 Pro 25H2 26200.9278Ryzen 7 9800X3DG.Skill Trident Z5 RGB DDR5-6000 32GB (2×16GB...RTX 5080 Palit Gaming Pro
    OS
    Windows 11 Pro 25H2 26200.9278
    Computer type
    PC/Desktop
    Manufacturer/Model
    Gigababyte X870E Aorus Pro Rev 1.1
    CPU
    Ryzen 7 9800X3D
    Motherboard
    Gigababyte X870E Aorus Pro Rev 1.1
    Memory
    G.Skill Trident Z5 RGB DDR5-6000 32GB (2×16GB) CL30 2 x 16gb
    Graphics Card(s)
    RTX 5080 Palit Gaming Pro
    Sound Card
    Steel Series Arctis 1 Gaming Head phones
    Monitor(s) Displays
    Asus ROG Strix 27″ QHD OLED XG27AQDMG & Phillips 272V8
    Screen Resolution
    2560 X1440 27 Inch 240 HZ Asus
    Hard Drives
    Drive Model Capacity Type / current use
    Samsung SSD 990 PRO NVMe SSD 2 TB Main drive C: Windows (~497 GB) + E: Games (~1.36 TB)
    Samsung SSD 840 EVO SATA SSD 500 GB K: (~463 GB)
    Samsung SSD 960 EVO NVMe SSD 500 GB Secondary SSD; previously F:
    Crucial P2 – CT1000P2SSD8 NVMe SSD 1 TB Secondary storage; previously G:
    Crucial MX500 – CT1000MX500SSD1 SATA SSD 1 TB Secondary storage; D:
    Samsung T7 Shield External USB SSD 2 TB External storage; H:
    PSU
    Corsair RM1000X
    Case
    Corsair CC750D (CC-9011078) Obsidian 750D Airflow Edition Black Full Tower ATX Case
    Cooling
    Corsair iCUE LINK TITAN 360 RX RGB
    Keyboard
    Razer BlackWidow V4 X Razer™ Yellow Mechanical Switches
    Mouse
    Logitech G502X Plus
    Internet Speed
    HFC 2000/100
    Browser
    Opera GX
    Antivirus
    Kaspersky Plus

  • At a glance

    Windows 11 23H2 22631.2715Intel i5-1135G78 GBIntel Iris Xe Graphics
    Operating System
    Windows 11 23H2 22631.2715
    Computer type
    Laptop
    Manufacturer/Model
    Dell XPS EVO 13.3" RNX9305C01AUSB
    CPU
    Intel i5-1135G7
    Motherboard
    Dell
    Memory
    8 GB
    Graphics card(s)
    Intel Iris Xe Graphics
    Monitor(s) Displays
    LED
    Screen Resolution
    1920 x 1080
    Hard Drives
    256GB SSD
    Other Info
    https://www.thegoodguys.com.au/dell-xps-evo-133-inches-win-11-laptop-rnx9305c01ausb
5 minutes earlier you already started this thread about 24H2 and POPCNT:
www.elevenforum.com

Will My CPU Support Windows 11 24H2?

I am reading I need to have this PopCnts As we all know, the latest version of Windows 11 no longer runs on some old CPUs. The affected CPUs are the ones missing SSE 4.2 instructions, POPCNT in particular.
www.elevenforum.com www.elevenforum.com

Seems to me one thread would suffice. ;-)
 

My Computer My Computer

At a glance

Windows 11 Pro 25H2AMD Ryzen 7 5700GKingston FURY Beast 2x16GB DIMM DDR4 2666 CL16MSI GeForce GT 730 2GB LP V1
OS
Windows 11 Pro 25H2
Computer type
PC/Desktop
Manufacturer/Model
Build by vendor to my specs
CPU
AMD Ryzen 7 5700G
Motherboard
MSI PRO B550M-P Gen3
Memory
Kingston FURY Beast 2x16GB DIMM DDR4 2666 CL16
Graphics Card(s)
MSI GeForce GT 730 2GB LP V1
Sound Card
Creative Sound Blaster Audigy FX
Monitor(s) Displays
Samsung S24E450F 24"
Screen Resolution
1920 x 1080
Hard Drives
1. SSD Crucial P5 Plus 500GB PCIe M.2
2. SSD-SATA Crucial MX500-2TB
PSU
Corsair CV650W
Case
Cooler Master Silencio S400
Cooling
Cooler Master Hyper H412R with Be Quiet Pure Wings 2 PWM BL038 fan
Keyboard
Cherry Stream (wired, scissor keys)
Mouse
Asus WT465 (wireless)
Internet Speed
70 Mbps down / 80 Mbps up
Browser
Firefox 130.0
Antivirus
F-Secure (Internetprovider version)
Other Info
Router: FRITZBox 7490
Oracle VirtualBox 7 for testing software on Win 10 or 11
Kees said:
5 minutes earlier you already started this thread about 24H2 and POPCNT:
www.elevenforum.com

Will My CPU Support Windows 11 24H2?

I am reading I need to have this PopCnts As we all know, the latest version of Windows 11 no longer runs on some old CPUs. The affected CPUs are the ones missing SSE 4.2 instructions, POPCNT in particular.
www.elevenforum.com www.elevenforum.com

Seems to me one thread would suffice. ;-)
Click to expand...
Yeah thanks for your great insight. I didn't know I had posted it because the connection timed out happen sh*t happens sometimes.
 

My Computers My Computers

System One System Two

  • At a glance

    Windows 11 Pro 25H2 26200.9278Ryzen 7 9800X3DG.Skill Trident Z5 RGB DDR5-6000 32GB (2×16GB...RTX 5080 Palit Gaming Pro
    OS
    Windows 11 Pro 25H2 26200.9278
    Computer type
    PC/Desktop
    Manufacturer/Model
    Gigababyte X870E Aorus Pro Rev 1.1
    CPU
    Ryzen 7 9800X3D
    Motherboard
    Gigababyte X870E Aorus Pro Rev 1.1
    Memory
    G.Skill Trident Z5 RGB DDR5-6000 32GB (2×16GB) CL30 2 x 16gb
    Graphics Card(s)
    RTX 5080 Palit Gaming Pro
    Sound Card
    Steel Series Arctis 1 Gaming Head phones
    Monitor(s) Displays
    Asus ROG Strix 27″ QHD OLED XG27AQDMG & Phillips 272V8
    Screen Resolution
    2560 X1440 27 Inch 240 HZ Asus
    Hard Drives
    Drive Model Capacity Type / current use
    Samsung SSD 990 PRO NVMe SSD 2 TB Main drive C: Windows (~497 GB) + E: Games (~1.36 TB)
    Samsung SSD 840 EVO SATA SSD 500 GB K: (~463 GB)
    Samsung SSD 960 EVO NVMe SSD 500 GB Secondary SSD; previously F:
    Crucial P2 – CT1000P2SSD8 NVMe SSD 1 TB Secondary storage; previously G:
    Crucial MX500 – CT1000MX500SSD1 SATA SSD 1 TB Secondary storage; D:
    Samsung T7 Shield External USB SSD 2 TB External storage; H:
    PSU
    Corsair RM1000X
    Case
    Corsair CC750D (CC-9011078) Obsidian 750D Airflow Edition Black Full Tower ATX Case
    Cooling
    Corsair iCUE LINK TITAN 360 RX RGB
    Keyboard
    Razer BlackWidow V4 X Razer™ Yellow Mechanical Switches
    Mouse
    Logitech G502X Plus
    Internet Speed
    HFC 2000/100
    Browser
    Opera GX
    Antivirus
    Kaspersky Plus

  • At a glance

    Windows 11 23H2 22631.2715Intel i5-1135G78 GBIntel Iris Xe Graphics
    Operating System
    Windows 11 23H2 22631.2715
    Computer type
    Laptop
    Manufacturer/Model
    Dell XPS EVO 13.3" RNX9305C01AUSB
    CPU
    Intel i5-1135G7
    Motherboard
    Dell
    Memory
    8 GB
    Graphics card(s)
    Intel Iris Xe Graphics
    Monitor(s) Displays
    LED
    Screen Resolution
    1920 x 1080
    Hard Drives
    256GB SSD
    Other Info
    https://www.thegoodguys.com.au/dell-xps-evo-133-inches-win-11-laptop-rnx9305c01ausb
PvtJohnTowle said:
Yeah thanks for your great insight. I didn't know I had posted it because the connection timed out happen sh*t happens sometimes.
Click to expand...
Well, that other thread has gone now, so all is well :wink:

Will I be Able to Install Windows 24H2 ? POPCNTS?
Click to expand...
The minimum instruction set requirements for 24H2 have been updated slightly now, it's not just POPCNT that's required but SSE4.2 as well. If you are talking about the 7th gen i7-7700k in your System One then yes, it has SSE4.2.


So does the 11th gen i5-1135G7 in your System Two. In fact, all Core i3/i5/i7 from 1st gen on have SSE4.2.
If you are talking about any other CPU, then you can look it up in the link above.
 

My Computers My Computers

System One System Two Other systems

  • At a glance

    Windows 11 HomeAMD Athlon Silver 3050U8GBRadeon Graphics
    OS
    Windows 11 Home
    Computer type
    Laptop
    Manufacturer/Model
    Acer Aspire 3 A315-23-R9VY
    CPU
    AMD Athlon Silver 3050U
    Memory
    8GB
    Graphics Card(s)
    Radeon Graphics
    Monitor(s) Displays
    laptop screen
    Screen Resolution
    1366x768 native resolution, up to 2560x1440 with Radeon Virtual Super Resolution
    Hard Drives
    1TB Samsung EVO 870 SSD (from April 2026: 250GB EVO 850)
    Internet Speed
    150 Mbps
    Browser
    Edge, Firefox
    Antivirus
    Defender
    Other Info
    UPDATE - 11 April 2026: due to lid hinges starting to break up this laptop has been retired from active duty. The OS with all software and files has been migrated to my System Seven in 'Other systems' to carry on as my general purpose 'main machine'.

    I've now clean installed 25H2 and used Garlin's scripts to update Secure Boot to CA 2023 and revoke the PCA 2011 certificates. It's new role is to test secure boot issues.

    Info for 2021-2026:
    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 2021 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, 24H2 on 3rd October 2024 through Windows Update by setting the Target Release Version for 24H2, and 25H2 on 30th September 2025 through Windows Update by setting the Target Release Version for 25H2.

  • At a glance

    Windows 11 ProIntel® Core™ i5-520M8GB(integrated graphics) Intel HD Graphics
    Operating System
    Windows 11 Pro
    Computer type
    Laptop
    Manufacturer/Model
    Dell Latitude E4310
    CPU
    Intel® Core™ i5-520M
    Motherboard
    0T6M8G
    Memory
    8GB
    Graphics card(s)
    (integrated graphics) Intel HD Graphics
    Screen Resolution
    1366x768
    Hard Drives
    500GB Crucial MX500 SSD
    Browser
    Firefox, Edge
    Antivirus
    Defender
    Other Info
    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.
    In-place upgrade to 24H2 using hybrid 23H2/24H2 install media.
    Upgraded to 25H2 by Enablement Package.

    Also running Insider Experimental 263xx and 29xxx builds and Windows 10 as native boot .vhdx.
  • My SYSTEM THREE is a Dell Latitude 5410, i7-10610U, 32GB RAM, 512GB NVMe ssd, supported device running Windows 11 Pro.

    My SYSTEM FOUR was a 2-in-1 convertible Lenovo Yoga 11e (1st gen) type 20DA, Celeron N2930, 8GB RAM, 256GB ssd. Unsupported device. This has now been sold. It has been replaced by my System Eight.

    My SYSTEM FIVE is a Dell Latitude 3190 2-in-1, Pentium Silver N5030, 8GB RAM, 1TB NVMe ssd, supported device running Windows 11 Pro, plus Insider Beta, Experimental 263xx and 29xxx builds (and a few others) as a native boot .vhdx.

    My SYSTEM SIX is a Dell Latitude 5550, Core Ultra 7 165H, 64GB RAM, 1TB NVMe SSD, supported device, Windows 11 Pro, Hyper-V host machine. Updated to 25H2 on 30th September 2025.

    My SYSTEM SEVEN is a Lenovo Thinkpad T580, 1920x1080 touchscreen, Intel Core i7-8650U, 16GB RAM, 512GB NVMe SSD + 2nd 512GB NVMe SSD, a supported device for Windows 11. This is my current general purpose 'main machine'. The installed Windows 11 Home from my System One has been migrated to this machine. As its new home has an existing digital licence for Pro I've been able to upgrade the migrated OS from Home to Pro.

    My SYSTEM EIGHT is a 2-in-1 convertible Lenovo Yoga 11e (5th gen) type 20LN, Celeron N4120, 8GB RAM, 512GB NVMe ssd, a supported device for Windows 11. Currently running Windows 11 Pro, plus Insider Beta, Experimental 263xx and 29xxx builds as native boot vhdx.
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's.
Click to expand...

win11 24H2 also won't run on old AMD Socket AM3 based CPUs like Phenom II and certain Intel Core 2 Quads (from Penryn/Yorkfield) as well

need at least an AMD FX (bulldozer, piledriver, etc.) or Intel Core-i/Xeon (1st gen from Nehalem or Westmere) series to run 24H2 in which these old CPUs have SSE4.2 & POPCNT support
 

My Computer My Computer

At a glance

windows 10 ltsc
OS
windows 10 ltsc
I am downloading 24H2 right now. I will test it first in a virtual machine before upgrading. I will also clone the SSD of my test laptop (see my 1st system specs) that doesn't support SSE4.2 and do some experiments to see if 24H2 actually demand SSE4.2 or it is another fake requirement that can be bypassed. In worst case my test laptop will be stuck at 23H2 and I will only upgrade my main PC (see my 2nd system specs) that has a 3rd generation Intel Core-i7 that supports SSE4.2 I will post the results in the relevant thread.
 

My Computers My Computers

System One System Two

  • At a glance

    Windows 11 Pro 23H2 (7582), 25H2 (9445)Mobile DualCore Intel Core 2 Duo T7250, 2000 MHz4GBMobile Intel(R) GMA 4500M (Mobile 4 series)
    OS
    Windows 11 Pro 23H2 (7582), 25H2 (9445)
    Computer type
    Laptop
    Manufacturer/Model
    Acer Extensa 5630EZ
    CPU
    Mobile DualCore Intel Core 2 Duo T7250, 2000 MHz
    Motherboard
    Acer Extensa 5630
    Memory
    4GB
    Graphics Card(s)
    Mobile Intel(R) GMA 4500M (Mobile 4 series)
    Sound Card
    Realtek ALC268 @ Intel 82801IB ICH9 - High Definition Audio Controller
    Monitor(s) Displays
    1
    Screen Resolution
    1280x800
    Hard Drives
    Samsung SSD 850 EVO 250GB SATA Device (250 GB, SATA-III)
    Internet Speed
    802.11g wireless 54 Mbps
    Browser
    MICROSOFT EDGE
    Antivirus
    WINDOWS DEFENDER
    Other Info
    Legacy MBR installation, no TPM, no Secure Boot, no WDDM 2.0 graphics drivers, no SSE4.2, cannot get more unsupported ;) This is only my test laptop. I had installed Windows 11 here before upgrading my main PC. For my main PC I use everyday see my 2nd system specs.

  • At a glance

    Windows 11 Pro v25H2 (build 26200.9445)Intel Core-i7 3770 3.40GHz s1155 (3rd generat...2x Kingston Hyper-X Blu 8GB DDR3-1600GIGABYTE GeForce RTX 3050 WINDFORCE OC V2 6GB...
    Operating System
    Windows 11 Pro v25H2 (build 26200.9445)
    Computer type
    PC/Desktop
    Manufacturer/Model
    Custom-built PC
    CPU
    Intel Core-i7 3770 3.40GHz s1155 (3rd generation)
    Motherboard
    Asus P8H61 s1155 ATX
    Memory
    2x Kingston Hyper-X Blu 8GB DDR3-1600
    Graphics card(s)
    GIGABYTE GeForce RTX 3050 WINDFORCE OC V2 6GB (GV-N3050WF2OCV2-6GD)
    Sound Card
    Realtek HD audio (ALC887)
    Monitor(s) Displays
    Sony Bravia KDL-19L4000 19" LCD TV via VGA
    Screen Resolution
    1440x900 32-bit 60Hz
    Hard Drives
    WD Blue SA510 2.5 1000GB SSD as system disk, Western Digital Caviar Purple 4TB SATA III (WD40PURZ) as second
    PSU
    Thermaltake Litepower RGB 550W Full Wired
    Case
    SUPERCASE MIDI-TOWER
    Cooling
    Deepcool Gamma Archer CPU cooler, 1x 8cm fan at the back
    Keyboard
    Mitsumi 101-key PS/2
    Mouse
    Microsoft Compact Optical Mouse
    Internet Speed
    802.11ac 5GHz wireless 260Mpbs
    Browser
    Microsoft Edge, Mozilla Firefox
    Antivirus
    Microsoft Windows Defender
    Other Info
    Legacy BIOS (MBR) installation, no TPM, no Secure Boot, WDDM 3.0 graphics drivers, WEI score 7.4
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