Specifies the Windows domain used for NTLM authentication.

Data Type

string

Default Value

""

Remarks

This property is used when authenticating to SQL Server with NTLM (Windows) authentication. It specifies the domain name associated with the user account.

In NTLM authentication, a domain is a logical grouping of computers and user accounts managed under the same Windows security policies. This property helps the provider validate credentials in the correct domain context.

This property is useful when connecting to a SQL Server instance that requires Windows domain credentials.

If left blank, the driver may attempt to authenticate using the local machine domain.

Note: This property is only applicable when AuthScheme is set to NTLM. It is not used with other authentication methods such as Password, Kerberos, or AzureAD.