The Kerberos Configuration Manager for SQL Server is a diagnostic tool that helps troubleshoot Kerberos related connectivity issues with SQL Server, SQL Server Reporting Services (SSRS), and SQL Server Analysis Services (SSAS). It can perform the following functions:
Collect information about operating system (OS), Microsoft SQL Server instances, and Always On Availability Group Listeners installed on a server.
Report all Service Principal Name (SPN) and delegation configurations on the server.
Identify potential problems in SPNs and delegations.
Fix potential SPN problems.
The new release (v4.2) adds support for SQL Server 2019.
You can download the tool here, as well as read its install and usage instructions.