Resolving the untrusted CA certificate error while opening the Model development environment in the Firefox browser

When you open the Model development environment in the Firefox browser, if the certificate is not issued by a trusted certificate authority (CA), it will block the access and display the error: Did Not Connect: Potential Security Issue.

About this task

You can add the hostname to access the Model development environment as a security exception in the Firefox browser.

Procedure

  1. Click the Advanced… button on the error page, to view the details.
  2. Copy the hostname including the port number to the clipboard.
    For example, copy 127.0.0.1:8080 from the statement Firefox does not trust 127.0.0.1:8080 because its certificate issuer is unknown….
  3. Navigate to the Settings page in the Firefox browser.
  4. Select the Privacy & Security page to view the configuration.
  5. In the Certificates section, click View Certificates....
  6. In the Certificate Manager window, click the Servers tab.
  7. Click Add Exception....
    The Add Security Exception window appears.
  8. In the Location: field, paste the hostname that you copied to the clipboard.
  9. Click Get Certificate.
  10. Click Confirm Security Exception.
    The Add Security Exception window closes and the hostname that you added appears in the servers list.
  11. Click OK to complete the configuration.

What to do next

Refresh the web page in the Firefox browser or click Model development in the MLz UI navigation menu to access the Model development environment.