In SQL Server type in the following command in the Query Window:

USE Northwind;
Grant EXEC ON OBJECT::dbo.GetProducts TO "NT AUTHORITY\NETWORK SERVICE";
GO

The command above grants execution permission for user "NT AUTHORITY\NETWORK SERVICE" on the stored procedure dbo.GetProducts

dbo = owner schema
GetProducts = name of stored procedure
"NT AUTHORITY\NETWORK SERVICE" = user that IIS uses to access SQL Server



Blogs In the T-SQL Series:

• T-SQL: Stored Procedure (INSERT), INSERT A New Product In Northwind Part 1
• ASP.NET : Stored Procedures (INSERT), Insert a new Northwind Product Part 2
• T-SQL: Stored Procedures (DELETE), DELETE An Existing Northwind Product Part 3
• T-SQL: Stored Procedures (UPDATE), UPDATE An Existing Product In Northwind Part 4
• T-SQL: Stored Procedures (SELECT), SELECT Products and The Supplier Part 5
• ASP.NET: Calling Stored Procedure With A Parameter With SqlParameter Part 6
• ASP.NET: Get a Single Value From a Stored Procedure Part 7
• SQL Server: Granting Access Permissions to Stored Procedures For IIS Part 8