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"Unable to connect to host" and "< IP Address> does not correspond to a registered Query Server" messages with Cognos Query

Troubleshooting


Problem

When trying to use Cognos Query, we get a generic "Application Error" message displayed. Investigating the cqserver.log file shows: Error 0 : Unable to connect to host: on port: 25000. Error 0 : Unable to connect to host: on port: 25001. Or Error 0 : The IP address: getanother=.###.###.##, does not correspond to a registered Query Server. NOTE: Notice the incomplete IP Address provided in the error message.

[{"Product":{"code":"SSTQPQ","label":"IBM Cognos Series 7 PowerPlay"},"Business Unit":{"code":"BU048","label":"IBM Software"},"Component":"Cognos Query","Platform":[{"code":"PF033","label":"Windows"}],"Version":"7.5","Edition":"","Line of Business":{"code":"LOB76","label":"Data Platform"}}]

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Document Information

Modified date:
09 May 2025

UID

swg21499945

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