SPNEGO authentication is not supported on this client. firefox Internet explorer configuration

Configuring SPNEGO ( Integrated Windows Authentication ) on mozilla firefox:

Enter following address in mozilla firefox web browser
about:config

It will open warning page saying changing these setting might void warranty.
Click on I'll be careful, I promise!

In Filter field enter network.nego
This will list down preferences starting with network.nego*

Change value of network.negotiate-auth.delegation-uris to http://,https://
Change value of network.negotiate-auth.trusted-uris to http://,https://
Its done!

Configuring SPNEGO ( Integrated Windows Authentication ) on Internet Explorer:

1. At the desktop, log in to the windows active directory domain.
2. Activate Internet Explorer.
3. In the Internet Explorer window, click Tools > Internet Options > Security tab.
4. Select the Local intranet icon and click Sites.
5. In the Local intranet window, ensure that the "check box" to include all local (intranet) not listed in other zones is selected, then click Advanced.
6. In the Local intranet window, fill in the Add this Web site to the zone field with the Web address of the host name so that the single sign-on (SSO) can be enabled to the list Web sites shown in the Web sites field. Your site information technology staff provides this information. Click OK to complete this step and close the Local intranet window.
7. On the Internet Options window, click the Advanced tab and scroll to Security settings. Ensure that the Enable Integrated Windows Authentication (requires restart) box is selected.
8. Click OK. Restart your Microsoft Internet Explorer to activate this configuration.