[DISCUSSION] Windows 11 26H1 Build 28000 (PC) [x64/arm64 Retail - br_release]

Discussion in 'Windows 11' started by Enthousiast, Nov 7, 2025.

  1. Carlos Detweiller

    Carlos Detweiller Emperor of Ice-Cream
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    Dec 21, 2012
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    Yes, both are required now. They are still mentioned together, but AFAIK POPCNT is included in SSE4.2, anyway.
     
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  2. EaglePC

    EaglePC MDL Expert

    Feb 13, 2012
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    28000.1199 this build doesn't have the watermark or any expiry date, so can this be considered as RTM candidates?
     
  3. Carlos Detweiller

    Carlos Detweiller Emperor of Ice-Cream
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    Dec 21, 2012
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    It's RTM of 26H1, but irrelevant for non-ARM64 systems.
     
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  4. tistou77

    tistou77 MDL Guru

    Mar 22, 2008
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    Just optimized for ARM and exactly the same as a 25h2 (for example) for x64 ?
     
  5. Carlos Detweiller

    Carlos Detweiller Emperor of Ice-Cream
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    Dec 21, 2012
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    MS said that non-ARM64 systems should stay on 25H2, and 26H2 will be the next Feature Update.
     
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  6. tistou77

    tistou77 MDL Guru

    Mar 22, 2008
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    Yes, but MS released a 64-bit build, so some people want to test it
     
  7. Paul Mercer

    Paul Mercer MDL Guru

    Apr 6, 2018
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    they also release arm server builds, it means nothing
    client builds should stay at 26200, new arm laptops at 28000, 26H2 should be 28000+EP for everyone
     
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  8. tistou77

    tistou77 MDL Guru

    Mar 22, 2008
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    And ? I don't see the connection between that and whether some people want to test the 26h1 x64.
    Or did MS release an x64 build just because they were bored?
     
  9. Paul Mercer

    Paul Mercer MDL Guru

    Apr 6, 2018
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    The original question was about RTM status of this build
    x64 variant will stay as insider preview for a year or so

    If you want to "test" it on your x86_64 hardware - sure, but it's not meant for that as rtm, not yet
     
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  10. Paul Mercer

    Paul Mercer MDL Guru

    Apr 6, 2018
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    finally got my first bsod while updating apps in the msft store

    The computer was restarted after a critical error. Error code: 0x0000001a (0x0000000000000403, 0xffffb908b4aa1530, 0x00000007af0a68c0, 0x0000000000000000). Memory dump saved to: C:\WINDOWS\Minidump\112425-15515-01.dmp. Report code: a29db73e-3680-4083-87e9-e2c2f2cb33d9.
     
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  11. rayman95

    rayman95 MDL Senior Member

    Oct 3, 2018
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    ah finally!!! we find back our good old M$..:D
     
  12. Paul Mercer

    Paul Mercer MDL Guru

    Apr 6, 2018
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    #113 Paul Mercer, Nov 24, 2025
    Last edited: Nov 24, 2025
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  13. Muggaen

    Muggaen MDL Addicted

    Dec 30, 2011
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    working just fine on this

    CPU
    Intel Pentium G3240 @ 3.10GHz 27 °C
    Haswell 22nm Technology
    RAM
    16,0GB Dual-Channel DDR3 @ 665MHz (9-9-9-24)
    Motherboard
    MEDION H81H3-EM2 (SOCKET 0) 30 °C
    Graphics
    HP w20 (1680x1050@59Hz)
    4095MB NVIDIA GeForce GTX 1650 (ZOTAC International) 32 °C
    Storage
    894GB KINGSTON SA400S37960G (SATA-2 (SSD)) 23 °C
    5589GB TOSHIBA HDWD260 (SATA ) 23 °C
    5589GB TOSHIBA HDWD260 (SATA ) 26 °C
     
  14. Dark-MG-86

    Dark-MG-86 MDL Novice

    Sep 3, 2013
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    Need some help trying to do an inplace upgrade from 26200.7296 Pro to this build please :)
    I have error code 0x8007042B - 0x2000D after first reboot on phase SAFE_OS, MIGRATE_DATA
    I'm surely doing something wrong because I have this exact same issue with my 2 PCs (i7-3770K without TPM and i5-6200U).
    I use an fr-fr localized ISO created as usual with uupdump and fixed by @Enthousiast's last kit with default settings, and an untouched ISO with AveYo's script V13 with everytime the same result.
    Eveything is OK until first reboot and then the installation stop after approximately 23%.
    I'm not using any third party AV, just Defender which is stopped during process.
    Tried SFC and Dism repair, no error.
    Tried a new fresh download with uup but no luck.
    When I analyse the end of setupact.log file, I find evey time the same TPM driver related error during the migration process (which is strange because of the bypass no ? and there is a TPM on my laptop with i5-6200U) :

    2025-11-24 19:25:59, Info MIG V2VArbitrate: Source migration unit <System>\accessibility\accessibility\accessibility_settings\Microsoft-Windows-accessibilitycpl (CCSIAgent) is supported on the destination by migration unit <System>\accessibility\accessibility\accessibility_settings\Microsoft-Windows-accessibilitycpl (CCSIAgent)
    2025-11-24 19:25:59, Info MIG V2VArbitrate: Source migration unit <System>\Microsoft-Windows-TPM-Driver-WMI (CCSIAgent) is not supported on the destination machine and it will not be restored
    2025-11-24 19:25:59, Error MIG V2VArbitrate: Source migration unit is critical, arbitration will fail[gle=0x000000cb]
    2025-11-24 19:25:59, Error V2V Arbitration failed. Last error: 0x00000032[gle=0x00000032]
    2025-11-24 19:25:59, Info Apply ended at 11/24/2025 18:25:59
    2025-11-24 19:25:59, Info MIG Received request to restart the explorer process from context: SYSTEM
    2025-11-24 19:25:59, Info Leaving MigApply method

    Any idea ?
     
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  15. Enthousiast

    Enthousiast MDL Tester

    Oct 30, 2009
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    On 24H2+ this only works for upgrades by WU, not ISO upgrades.

    Iirc, these errors are mostly related to incompatible drivers.

    Only my 2 main systems have TPM2.0 onboard, it's not in use on both, all my other hardware doesn't have a TPM2.0 and i frequently upgrade them by fixed ISO.

    I can assume that you have used option 1 and left the install offline during the upgrade setup stage?

    Or when you have used option 2a to fix the ISO you need to use option 2b to prepare the install you want to upgrade (either run 2b or the upgrade enabler script that can be found on the fixed ISO).
     
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  16. Dark-MG-86

    Dark-MG-86 MDL Novice

    Sep 3, 2013
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    #118 Dark-MG-86, Nov 24, 2025
    Last edited: Nov 24, 2025
    I tried the 2 ways, an ISO with option 1 and another with 2a and the script but nothing work, everytime the same error (EDIT : I was offline only one time but I always disable the search for update at the beginning of the setup)

    I've been using the same hardware and the latest bypass method for years without any problems, but this time I don't understand what's happening.

    Especially since the error is the same on both of my PCs.
     
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  17. Dark-MG-86

    Dark-MG-86 MDL Novice

    Sep 3, 2013
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  18. Enthousiast

    Enthousiast MDL Tester

    Oct 30, 2009
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    #120 Enthousiast, Nov 26, 2025
    Last edited: Nov 26, 2025
    (OP)
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