How to remove the user from Credential Manager (4379492)

While removing the credential from credential manager, it fail to remove the credential.

Make sure those credentials are not in use with any discoveries, and none of the discovery nodes are using the account or with ER service account. 

Login to SQL server using the service account and then try to access the ER database. Before doing any steps, take a full backup of the database and follow below steps.

Check under the tables | go to tblCredentials | right click on and edit top 200 rows

You will see all the credentials and look for the account you want to remove and delete the entire row.

Then restart the ER services and the user will be removed.