Unable to change the default database on Linux Mint to MSSQL Server

Unable to change the default database on Linux Mint to MSSQL Server

I am trying to change the default database to MSSQL Server database but not able to establish the connection. It is getting failed with an error stating "Connestion failed for user"Administrator".Clientconnectionid:******". I have checked my credentials and tried different combinations as well ex. with domain and without domain. Nothing worked. Please let me know the solution to it. Thanks!

                New to ADSelfService Plus?