Complete the following steps to ensure that your Firefox browser is enabled to perform SPNEGO authentication. 1. At the desktop, log in to the windows active directory domain. 2. Activate Firefox. 3. At the address field, type about:config. 4. In the Filter, type network.n 5. Double click on network.negotiate-auth.trusted-uris. This preference lists the sites that are permitted to engage in SPNEGO Authentication with the browser. Enter a comma-delimited list of trusted domains or URLs (stream.valmet.com). 6. Click OK. The configuration appears as updated. 7. Restart your Firefox browser to activate this configuration.