Microsoft Windows 11 Windows 11 upgrade on unsupported hardware fails Updated September 20 2025
You can save the following text as a text file such as Win11Force.reg, then right click and merge it with your registry.

Copy to Clipboard Windows Registry Editor Version 5.00 [HKEY_CURRENT_USER\SOFTWARE\Microsoft\PCHC] "UpgradeEligibility"=dword:00000001 [HKEY_LOCAL_MACHINE\SYSTEM\Setup\MoSetup] "AllowUpgradesWithUnsupportedTPMOrCPU"=dword:00000001 [HKEY_LOCAL_MACHINE\SYSTEM\Setup\LabConfig] "BypassRAMCheck"=dword:00000001 "BypassSecureBootCheck"=dword:00000001 "BypassTPMCheck"=dword:00000001


Then run the Windows 11 Upgrade Assistant from here:
https://go.microsoft.com/fwlink/?linkid=2171764

You can see more details here:
https://www.microsoft.com/en-us/software-download/windows11





Below is the old information we have, which may still work. but the above is the current preferred method.

Prepare the Win11 24H2 ISO, put it on a USB with Rufus, check the box to "Remove requirement for 4GB RAM..."

Run this as Administrator:
Copy to Clipboard reg.exe delete "HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\AppCompatFlags\CompatMarkers" /f 2>NUL reg.exe delete "HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\AppCompatFlags\Shared" /f 2>NUL reg.exe delete "HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\AppCompatFlags\TargetVersionUpgradeExperienceIndicators" /f 2>NUL reg.exe add "HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\AppCompatFlags\HwReqChk" /f /v HwReqChkVars /t REG_MULTI_SZ /s , /d "SQ_SecureBootCapable=TRUE,SQ_SecureBootEnabled=TRUE,SQ_TpmVersion=2,SQ_RamMB=8192," reg.exe add "HKLM\SYSTEM\Setup\MoSetup" /f /v AllowUpgradesWithUnsupportedTPMOrCPU /t REG_DWORD /d 1


Run setup.exe from USB.

https://www.ghacks.net/2024/10/08/how-to-upgrade-to-windows-11-24h2-on-unsupported-hardware/

FlyBy11: update introduces more Windows 11 installation options and plugins
https://www.ghacks.net/2024/10/30/flyby11-update-introduces-more-windows-11-installation-options-and-plugins/

Another article about FlyBy11:
https://www.ghacks.net/2025/01/17/this-is-the-simplest-option-to-upgrade-windows-11-on-unsupported-hardware/
Search Keywords: Windows 11, Upgrade, Update, 24H2, 23H1, 23H2, 22H2, 22H1, setup.exe, Win11, Win10




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