Secret Server Support for HTTP/2

HTTP/2 is supported in IIS 10. HTTP/2 is handled within IIS, so this is primarily a Microsoft question in regards to compatibility. Please see HTTP/2 on IIS. At the end of this article, it clarifies when HTTP/2 is not supported

Secret Server does support Windows Integrated Authentication where a user's windows session is passed through for authentication to Secret Server. That is, there is no log on page for Secret Server. The majority of our customers are (and the default configuration for Secret Server is) using forms-based authentication with a log on page. Only the latter is HTTP/2 compliant.

HTTP/2 is only compatible with HTTPS protocol. Secret Server can also be configured to operate only on HTTPS (Admin > Configuration > Security > Force HTTPS/SSL), which we strongly recommend.