In this scenario the error is returned very early in the installation. After selecting the report server/instance the following error is returned:
The selected SQL Reporting Server instance is not configured.
To continue with setup, you must first configure the SQL Reporting Server instance using SQL Server's Reporting Services Configuration Manager. has occurred
CheckHttpAddressResponse: WebException Raised. The following error occurred : The underlying connection was closed: An unexpected error occurred on a send.
1. Open IIS Administrator.
2. Properties of the Default Website.
3. Clear any numbers in the "SSL Port" box.
4. Run installation.