MSSQL: The server principal is not able to access the database

If you accessing MSSQL 2005 with MSSQL 2008 management studio, you might getting error of The server principal is not able to access the database when log into the database server.

To fix it,
1. Connect to SQL Server Management Studio.
2. Connect to the SQL server.
3. Click “View” and then select on the “Object Explorer Details”. (This step could be done from shortcut F7) Continue reading MSSQL: The server principal is not able to access the database