That error would indicate that a client is attempting to log in, but failing. Your post is written is such a way that it seems to me you’re not aware of any failed login attempts, so the first thing to do would be to track down who’s trying to log in, and make sure that it’s expected, and that they’re confident that the password should work.
Once you’ve confirmed that it’s not just someone trying to guess passwords, the next step would be to look at how your authentication profiles are set up. If you’re using DB based authentication, it could indicate that your DB connection is down. Or, perhaps somehow the authentication profile settings for the project got modified somehow. Log into the gateway, and check:
- What kind of authentication profiles are set up
- Which profile your project(s) is/are set to use
- If the profiles seem to be working ok (db connections up, no other errors in console).
If something is really wrong and you can’t log into the gateway, you can reset the root password using the GCU (launched from the start menu).
Hope this helps,