See Single Sign-on through IIS in the MSS Administrative Console documentation if you need further information.
This option uses Microsoft IIS web server.
To enable Host Access for the Cloud to work with this authentication method, add the following property in the <install dir>/sessionserver/conf/container.properties file:
The value of this property is the IIS web server address and port along with the / MSS path. For example: http://server/mss. If authentication fails, you may need to remove the domain name in order for the domain credentials to be passed to IIS: http://server/mss.