remove intune based kiosk config

I've not seen this specifically but I see similar behavior in Intune. Removing the policy association doesn't always revert configuration, in much the same way that removing a GPO didn't.

You could try Custom User Interface catalog setting to revert to default explorer and run a script such as the below to disable auto logon?

# Disable AutoAdminLogon and clear credentials

$regPath = "HKLM:\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon"

Remove-ItemProperty -Path $regPath -Name "AutoAdminLogon" -ErrorAction SilentlyContinue

Remove-ItemProperty -Path $regPath -Name "DefaultUserName" -ErrorAction SilentlyContinue

Remove-ItemProperty -Path $regPath -Name "DefaultPassword" -ErrorAction SilentlyContinue

Remove-ItemProperty -Path $regPath -Name "DefaultDomainName" -ErrorAction SilentlyContinue