Is Active Directory a requirement for K2 Blackpearl?

Yes, Active Directory is a requirement.  K2 blackpearl won't install properly if you use a workgroup server machine.

You can use the SQL User manager for non-AD users.  However, the K2 server itself still requires active directory for the setup.

It's already installed by default.  The security prefix is "K2SQL".  Note that the K2 workspace currently does not work with SQLUM users.  So basically, this will only work if you have custom ASP.NET forms.  This allows you to specify the user id and password when opening the connection.  e.g. "K2SQL:MyUser"

Ok thanks

Thanks Johnny.