: This is the easiest tool for developers to create locally-trusted certificates.
Open Keychain Access -> Drag cert.pem into the System keychain -> Double-click the certificate -> Expand Trust -> Change settings to Always Trust .
To simplify the process, excellent tools like mkcert have been developed. mkcert automates the entire process described above: https localhost11501 verified
Run mkcert -install in your terminal. This prompts your operating system and browsers to trust certificates issued by mkcert .
This generates two files: localhost+2.pem (the certificate) and localhost+2-key.pem (the private key). Configure your web server running on port 11501 to use these files, and the "Not Verified" error will disappear. Method 3: For .NET / ASP.NET Core Developers : This is the easiest tool for developers
If you cannot install third-party tools, you can manually generate and trust a certificate via OpenSSL. Run the OpenSSL command:
Developing with HTTPS on localhost is no longer just a security best practice; it's a necessity for modern feature development. Here are the key reasons: mkcert automates the entire process described above: Run
Demystifying "https://localhost:11501": The Developer's Guide to Secure Local Environments
Note: You may be prompted to enter your system password or approve a security dialog.
What (e.g., .NET, Node.js, Docker) is running on port 11501?