How can I change the favicon that shows in the web portal?

The favicon that appears in the web portal    it is updated when the Application Icon it is changed, log into the web portal as Cluster Admin, go to the Cluster Manager \ Cluster Branding \ Web Portal, here update the Application Icon (PNG format recommended (32x32).

After applying these changes you can refresh the page and will see the new icon, It is recommended to clear the cache if it does not appear.

For more Branding settings, visit this Article: How to Apply General and Web Portal Branding Settings.