Cannot install 1.2.7 on W11

[dymm2000]

New event in windows logs every run of setup:

Faulting application name: CHXSmartScreen.exe, version: 10.0.26100.1150, time stamp: 0x85c45f47
Faulting module name: Windows.UI.Xaml.dll, version: 10.0.26100.3037, time stamp: 0x659a665a
Exception code: 0xc000027b
Fault offset: 0x00000000009017f3
Faulting process id: 0xE74
Faulting application start time: 0x1DB7FCDDC824FD9
Faulting application path: C:\Windows\SystemApps\Microsoft.Windows.AppRep.ChxApp_cw5n1h2txyewy\CHXSmartScreen.exe
Faulting module path: C:\Windows\System32\Windows.UI.Xaml.dll
Report Id: 4ee98340-306b-4adf-abaa-78db0d25191f
Faulting package full name: Microsoft.Windows.Apprep.ChxApp_1000.25128.1000.0_neutral_neutral_cw5n1h2txyewy
Faulting package-relative application ID: App

[Xjph]

Faulting application name: CHXSmartScreen.exe

This isn't Observatory. Something is wrong with the Smart Screen feature of your Windows install.