“Hide the header region and navigation” should be enabled to hide the Salesforce Experience Cloud Site Header completely. I have used this option to avoid showing Search Bar in the Salesforce Experience Cloud/Community Cloud Site.
1. Go to Theme Settings.
![](https://www.infallibletechie.com/wp-content/uploads/2022/01/how-to-hidedisable-header-search-bar-791534178.jpeg)
2. Disable “Hide the header region and navigation” and “Hide notifications icon in header”.
![](https://www.infallibletechie.com/wp-content/uploads/2022/01/how-to-hidedisable-header-search-bar-519190873.jpeg)