Choosing a port other than the default 8081 during an APM installation breaks the Team Center start page.

Document ID : KB000031698
Last Modified Date : 14/02/2018
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 We upgraded EM from APM 9.6 to 10.1 and tried to access the ATC console, but was unsuccessful in doing this. It gives the below errors on the ATC page. 

   Error reading data from polling URL: ../apm/appmap/private/permission. Retrying in 60000ms. Attempt 3 

   Error retrieving permissions. Status code: 503 

 Installation/upgrade logs look good and show no errors and the Postgres DB is accessible.



 APM 10.1 / Windows 2008 




 The property in the has not been updated accordingly during the upgrade process. 



 Un-comment(if commented out) and modify following property in a file.  Note that {EM_HOST} would be the IP address or hostname  of the EM you are connecting to.{EM_HOST}:8081/apm/appmap


 * Note: 8081 is the default port that is a "introscope.enterprisemanager.webserver.port" property value of EM's file. They  should match.