Q: Will OnGuard agent stores the user credentials(password)?
If yes, then where will it store the credentials on Windows and MAC OS X?
A: OnGuard agent needs user credentials (username and password) only when the agent mode is set to authentication or authentication + health checks as shown below.

On Windows, the OnGuard agent stores credentials in "Windows Credential Manager".
On Mac OSx, the credentials are stored in "User Defaults System".
Note: The OnGuard Agent stores the user credentials after successful authentication, even the if the health checks did not pass(EX : Quarantine/not-healthy).
The credentials cache Interval can be configured under Administration >> Agent and Software Updates >> OnGuard Settings >> Global Agent Settings.
