Importing SSL certificate on IIS Windows system, the direct use IIS "Server Certificate" feature, you can import.
But when you start the site, being given "another program is using this file can not be accessed (Exception from HRESULT: 0x80070020)", which is why the port is occupied.
Enter netstart -obna to see which program is occupied in the CMD.
Here it is occupied SVN, SVN or modify port, or use a different port number.
