I had this weird error today when im trying to start my WAS 7 on Windows Server, somehow my WAS wont startup with some weird error that port 8880 is occupied
ADMU0111E: Program exiting with error: com.ibm.websphere.management.exception.AdminException: ADMU3027E: An instance of the server may already be running: server1
It’s weird because i check using netstat -aon command and see that port 8880 is free.
My workaround is changing file serverindex.xml on WebsphereInstallationFolder\WebSphere\AppServer\profiles\ AppSrv01\config\cells \cellname\nodes\nodename\serverindex.xml and change port 8880 into 8881
<specialEndpoints xmi:id="NamedEndPoint_1183122129641" endPointName="SOAP_CONNECTOR_ADDRESS"> <endPoint xmi:id="EndPoint_1183122129641" host="SERVER1" port="8881"/> </specialEndpoints>
Hope it helped others,
have fun using Websphere