Error message when you install SQL Server 2005: "Cannot alter the login 'sa', because it does not exist or you do not have permission"
Source: Knowledge Base
Product: Microsoft SQL Server 2005 Standard Edition
Notification Contents: New and All Modifications
Error message when you install SQL Server 2005: "Cannot alter the login 'sa', because it does not exist or you do not have permission"
http://support.microsoft.com/kb/917827/en-US