Resetting CIFS domain controllers
You can use System Manager to reset the CIFS connection to domain controllers for the specified domain. Failure to reset the domain controller information can cause a connection failure.
You have to update the discovery information of the storage system’s available domain controller after you add or delete a domain from the list of preferred domain controllers. You can update the storage system’s available domain controller discovery information in ONTAP through the command-line interface (CLI).
Click Storage > SVMs.
Select the SVM, and then click SVM Settings.
In the Domain tab, click Reset.