remove mail profile when Outlook wont open

The server address for our exchange server changed, but then you cant open Outlook on client computer.   To edit or remove bad profile:

Remove a profile

Applies To: Outlook 2010

A profile consists of accounts, data files, and settings that specify where your email messages are saved.

1. Exit Outlook.
2. In Control Panel, click or double-click Mail.
   Where is Mail in Control Panel?
   Mail appears in different Control Panel locations depending on the version of the Microsoft Windows operating system, Control Panel view selected, and whether a 32- or 64-bit operating system or version of Outlook 2010 is installed.
   The easiest way to locate Mail is to open Control Panel in Windows, and then in the Search box at the top of window, type Mail. In Control Panel for Windows XP, type Mail in the Address box.
   NOTE:  The Mail icon appears after Outlook starts for the first time.
   The title bar of the Mail Setup dialog box contains the name of the current profile. To select a different existing profile, click Show Profiles, select the profile name, and then click Properties.
3. Click Show Profiles.
4. Select a profile.
5. Click Remove.

NOTE:  Removing an email profile doesn’t remove your Outlook Data Files (.pst), so no data is lost.

from Office.com