Changed the port from 8080 to 9090. But still it pointing to 8080
<Connector port="9090" address="0.0.0.0" protocol="HTTP/1.1"
connectionTimeout="20000" redirectPort="8443">
</Connector>
Changed the port from 8080 to 9090. But still it pointing to 8080
<Connector port="9090" address="0.0.0.0" protocol="HTTP/1.1"
connectionTimeout="20000" redirectPort="8443">
</Connector>
Found my problem. I was referring to wrong folder("C:\tomcat-8.5.24\conf") instead of "C:\Program Files\Apache Software Foundation\Tomcat 8.5\conf"
OpenKM installed Tomcat in "C:\tomcat-8.5.24". So when I tried to access http:localhost:8080/OpenKM, it was saying someone is already using port 8080.
So I was making changes to "C:\tomcat-8.5.24\conf\server.xml" and restarting Tomcat service instead of OpenKM service.