Issue: To enable the Registry Browser in Change Guardian, you must set the repositoryEnabled flag (under HKLM\Software\Wow6432Node\NetIQ\ChangeGuardianAgent\repositoryEnabled) to 1, and then restart the agent.
Workaround: Manually set the flag to 1, when you use the Registry Browser, to avoid the error Could not connect to Windows Data Source. (Bug 945225)