* Trust the HTTPS development certificate by running the following command:

    ```console
    dotnet dev-certs https --trust
    ```

* The preceding command displays the following output:

    ```console
    Trusting the HTTPS development certificate was requested. If the certificate 
    is not already trusted we will run the following command:
    'sudo security add-trusted-cert -d -r trustRoot -k /Library/Keychains/System.keychain 
    <<certificate>>'
    This command might prompt you for your password to install the certificate on the 
    system keychain.
    The HTTPS developer certificate was generated successfully.
    ```

* Enter the admin username and password if prompted.  The certificate will now be installed and trusted.

    See [Trust the ASP.NET Core HTTPS development certificate](xref:security/enforcing-ssl#trust-the-aspnet-core-https-development-certificate-on-windows-and-macos) for more information.