When you start Cognos Configuration, you may receive an error message that the Java Runtime Environment (JRE) has changed and that the current cryptographic information is not compatible with the new JRE. This may force you to be prompted to regenerate the cryptographic information for the new JRE or exit to switch back to the previous JRE.
This error may occur for one of these reasons:
• Your configuration data was encrypted using a different JRE than the one Cognos 8 components are currently using.
• The cryptographic information may have been corrupted.
If you click Regenerate in the error dialog, the Cognos 8 service is stopped and the cryptographic information is regenerated.
If you click Exit in the error dialog, you must set the JAVA_HOME environment variable to point to the JRE that you used to save your configuration.
On Windows, if you want Cognos 8 components to use the JRE that is installed by default, unset JAVA_HOME or set JAVA_HOME to c8_location/bin/jre.