To enable the ssl within iis express, you have to just set “ssl enabled = true” in the project properties window See the steps and pictures at this code project Iis express will generate a certificate for you (you'll be prompted for it, etc.). It works with macos, linux and windows, on chrome and firefox, and requires you no configuration. Secure socket layer (ssl) or transport layer security (tls) provides a way for secure communication over the internet. Localhost refused to connect error can be caused by an incorrectly configured port, insufficient permissions, or an inoperative web server.
These certificates help users identify that they are talking to the right server and send secure messages
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