i got problem wit debugging d asp web form. After i finished building the solution and press d start debugging button, an error message prompt out

"Unable to start debugging on web server. Debugging failed becoz integrated windows authentication is not enabled".

izit d statement i used as connection string are wrong or other problem??
Tis is my connection string

Public Const DbString As String = _
"Data Source=localhost;initial catalog=NorthwindSQL; User Id=;password=;"

Pls any expert help me.

Usually relates to IIS permission issues.

Try this.
IIS > Right click default website > Properties > Under "Directory Security" Tab > Anonymous access and authentication control > Edit

Make sure "Anonymous Access" and "Integrated Windows authentication" is checked.