Just upgrade my work machine to Windows 11 and try to re-install 1password.
the installer always show fail and trying to roll-back.
After some try and error. I turned on Developer mode in "Privacy and Safty"
Then it worked.
I tried fallback to previous version, 7.7.819, which showed same symptons.
1Password Version: 7.8.820
Extension Version: Not Provided
OS Version: Windows 11 Enterprise Build 22000.194