Troubleshooting
Problem
Security software is blocking connections when attempted by Cognos Analytics.
Symptom
Various tasks fail in Cognos Analytics, such as scheduled reports, data source queries, loading administration pages, etc.
Cause
Security software, such as Windows Firewall, or 3rd party Endpoint Detection and Response (EDR) solutions are blocking connections due to restrictive policies.
Diagnosing The Problem
Log files like cogaudit.log and cognosserver.log in <install_directory>\logs show various operations fail with error "java.net.SocketException: Permission denied: connect", for example:
CNC-GEN-2107 An unexpected error has occurred. The message is: RequestOperation = null ERROR : ; nested exception is: com.cognos.jsmcommon.api.APIException: CNC-MON-0024 Monitor Service paging error: java.net.SocketException: Permission denied: connect
Server admins can find logs in Windows Event Viewer that might confirm when security software is blocking connections. A good place to start is opening:
Event Viewer (Local) > Windows Logs > Security
Under the "Actions" menu go to "Filter Current Log..." and click the "Keywords" dropdown menu. Check the box for "Audit Failure" and press "OK".
You can then correlate the date and time of the errors that are found in Cognos Analytics with the Audit Failure logs in Event Viewer. Determine whether any security policies or devices that block connections. Look for the following event-type:
Event ID 5157 – The Windows Filtering Platform has blocked a connection
Resolving The Problem
If connection blockages are found, review and adjust security device policies for Windows to allow Cognos Analytics to make connections to external endpoints required to for it to operate properly.
Related Information
Document Location
Worldwide
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Document Information
Modified date:
31 July 2025
UID
ibm17239512