Failed to expand group (GUID), the username or password is incorrect. (4379119)

Coordinator logs are showing the error: Failed to expand group (GUID), the username or password is incorrect.

Using adsiedit see if the coordinator forest root domain has the objectGUID, the forest being searched in the log messages. If it is, ensure that at least one domain controller with the GC role is available - if there isn't you could get that error. If the forest root does not have that objectGUID then the failure is searching a foreign forest with empty credentials (IOW using the computer identity) and if that foreign forest doesn't trust the coordinator host then it will fail. You can try adding the foreign forest credential to the coordinator using the Change Auditor Client, under View > Deployment, "Foreign Forest" menu item.