The limitation was always there, its possible that only more recently the UI warning message was added.
There is not WAF Authentication, you must disable one of: Web Application Firewall Web Protection, Transparent Mode, AD SSO (switch to a different authentication mode)
This not a reduction in features, it is a limitation of a new feature. Here is my marketing-talk version of this: "UTM 9.2 is proud to announce a brand new feature! The UTM now has the ability to AD SSO in Transparent Mode! Note: This feature is not available if you are using WAF."
The limitation was always there, its possible that only more recently the UI warning message was added.
There is not WAF Authentication, you must disable one of: Web Application Firewall Web Protection, Transparent Mode, AD SSO (switch to a different authentication mode)
This not a reduction in features, it is a limitation of a new feature. Here is my marketing-talk version of this: "UTM 9.2 is proud to announce a brand new feature! The UTM now has the ability to AD SSO in Transparent Mode! Note: This feature is not available if you are using WAF."