Hi, and thank you for the kind words. Just to clarify, I'm not a Microsoft employee. I'm an experienced user and active member of the community. I do my best to share accurate and helpful information based on my knowledge of the platform.
To answer you directly, no, using setup.exe /product server is not the officially supported or reliable way to bypass hardware checks like TPM when doing an in-place upgrade to Windows 11. While some folks have used that flag as a workaround in niche cases, it's not intended for this use. It's actually designed for server product installations and can cause unexpected behavior, compatibility issues, or activate the wrong edition entirely.
For unsupported hardware (like missing TPM 2.0), Microsoft has provided a more stable and officially documented bypass method that does not require using the /product server flag.
Here’s the correct way to do it.
Download the Windows 11 ISO from the official Microsoft site.
Mount the ISO, then do not run setup.exe yet.
Press Win + R, type regedit, and go to
HKEY_LOCAL_MACHINE\SYSTEM\Setup\MoSetup
If MoSetup doesn't exist, right-click Setup, choose New > Key, and name it MoSetup.
Inside MoSetup, create a new DWORD (32-bit) value named
AllowUpgradesWithUnsupportedTPMOrCPU
Set its value to 1.
Close Registry Editor, then run setup.exe from the mounted ISO.
Proceed with the upgrade. Make sure you select "Keep personal files and apps."
Note: Be very careful when editing the registry; incorrect changes can cause system issues.
Hope that answers your questions.
All the best, cheers!
_Adrian A