The DNS domain name cannot contain DBCS (Double-Byte Character Set) or extended characters

Windows Small Business Server 2003 Setup cannot install Exchange or Windows SharePoint® Services during the upgrade because the DNS (Domain Name System) name for the internal domain contains nonstandard characters.

You must either complete a new installation or migrate to a new computer running Windows Small Business Server 2003. For more information about completing a new installation, see Chapter 3A, “New Installation,” of Getting Started. For more information about completing a migration, see the following step-by-step instructions.


The DNS domain name can only contain standard characters: A-Z, 0-9, and the hyphen (-).