The Apache Tomcat folder name could differ based on the installed version.
Right-click server.xml and select Open with → Notepad.
Locate the following entry:
Connector server="OtherWebServer" port="443"
Change the port from "443" to your desired port ("8443," in this example), and then save the .xml file and close Notepad.
Click Start → type Services (or services.msc) and press Enter.
Right-click the Apache Tomcat 9.0 service and select Restart from the context menu.
You can access the ESET PROTECT Web Console using the port specified in step 4. To access the ESET PROTECT Web Console, the new port number must be included in the URL address (for example, https://localhost:8443/era).