The identity of an application pool is the name of the account under which the worker process for an application pool runs. The account that you specify must be a domain account.

1. On the taskbar, click Start, point to Administrative Tools, and then click Internet Information Services (IIS) Manager.
2. In the Internet Information Services (IIS) Manager console, right-click the name of the application pool that you created, and then click Properties.
3. In the properties dialog box, on the Identity tab, click Configurable, and then do the following:
   1. In the User name box, type the name of the domain account in the format DOMAIN\user_name.

       Note   You can use a local account only when running the single server with SQL Server configuration.

   2. In the Password box, type the password for the account.
   3. Click OK.
4. In the Confirm Password dialog box, type the password again, and then click OK.