A Manager server can be accessed through various clients spread across different geographical locations. When a user accesses a server placed in a different time zone, the server time is converted to the client time zone based on Greenwich Mean Time (GMT), and displayed to the user.
If the clock time between the server and the client has a difference of more than 1 minute, Trellix IPS displays a warning message that prompts the user to reset the client machine clock to match with the server clock. This message is displayed only once per browser session.
If your Trellix IPS deployment is at a geo-location that uses daylight savings, then:
On your Windows Operating System, select Start → Settings → Control Panel → Date and Time.
Select the Automatically adjust clock for daylight saving changes.
This will add an hour to GMT during daylight savings time.