Unable to start Cognos 8: CM-SYS-5007

CM-SYS-5007 Content Manager build 2.0.1300.0 failed to start! Review the Content Manager log files and then contact your system administrator or customer support.
CM-CFG-5063 A Content Manager configuration error was detected while connecting to the content store.
DPR-CMI-4006 Unable to determine the active Content Manager. Will retry periodically.

Configuration saves successfully but unable to start Cognos 8 service

Incorrect sign on specified for the account used to connect to the content store in Cognos Configuration

Verify that the correct username and password for the database user account is specified in Cognos Configuration for the content store settings.