Https Localhost11501 2021 _top_

: This is a specific port number. Developers use custom ports like 11501 to run unique applications (such as backend APIs, microservices, or database dashboards) without conflicting with standard ports like 80 (HTTP) or 443 (HTTPS).

A universal alias pointing straight to your machine's loopback interface. It translates to the IPv4 address 127.0.0.1 or the IPv6 address ::1 without broadcasting outside data. https localhost11501 2021

Before 2020–2021, most developers used http://localhost . But browsers began requiring secure contexts for powerful features like: : This is a specific port number

Navigate to your project folder and run: mkcert localhost 127.0.0.1 ::1 Use code with caution. It translates to the IPv4 address 127

No active local service is currently running or listening on port 11501.

Modern browsers (Chrome 90+, Firefox 88+) treat localhost as a potentially secure context. They may auto-upgrade http://localhost to https:// if they detect a server supports it via HSTS or if you visited the HTTPS version before.

: Open the Control Panel, go to Internet Options , select the Content tab, and click Clear SSL State .