Login failed for user IFC

Programming, error messages and sample code
If you are getting error message such as  Login failed for user 'IFC\WIN50XX$',  that means your connection string is wrong.

1) Remove 'Integrated Security=True;' in your connection string. This is a common problem when someone copy their site from their local machine to our server.

2) Check your connection string against the one that's given in your hosting control panel -> Database Manager -> MSSQL Manager -> Connection String.  Make sure they are the same.