When there is a change in the hostname of your server monitor, it will be automatically updated in the Site24x7 web client in the next data collection. Go to Server > Server Monitor > Servers > click on the server monitor whose hostname is changed. You can view the hostname details in three places:
- In the Summary tab, below the display name and under Server Details.

- Hover on the hamburger icon and click on Edit. In the Edit Server Monitor page, you can find the updated hostname.

Note: Only after an agent restart/server restart, the hostname will be updated in the Edit Server Monitor page.