You backed up your Microsoft SQL Database and restored it on another system, but the user id's you've used before can not access the database.  This article is a summary of how to quickly configure the SQL Server database so that your previous user id's can access the database properly.

More...

If you have recently installed SQL Server 2005, for security purposes, external and remote access is not enabled by default. If you try to connect to a SQL Server database from an external machine you may see one of the following errors.

• SQL server does not allow remote connections
• SQL Network Interfaces, error: 26 - Error Locating Server/Instance Specified
• An error has occurred while establishing a connection to the server. When connecting to SQL Server 2005,this failure may be caused by the fact that under the default settings SQL Server does not allow remote connections.(provider:Named Pipes Provider,error:40-Could not open connection to SQL Server))
• Server does not exist or access denied

More...