If your Event log contains:
Event ID: 113 Source: W3SVC Type: Warning Category: NoneDescription: Instance 1 has invalid binding descriptor X Event ID: 115 Source: W3SVC Type: Error Category: None Description: The service could not bind instance 1. The data is the error code.you have invalid information in the IIS metabase at SecureBindings.
To fix this, type:
%SystemRoot%\System32\Inetsrv\Adminsamples\adsutil set w3svc/1/SecureBindings :443:
NOTE: You can replace 443 with another port number.