XWEB: VBScript Runtime Error 800a03e3 Using Outlook Web Access

WORKAROUND

• If the first cause is the problem, reinstall the OWA component from the Exchange Server CD to correct any damaged components.
• If the second cause is the problem, clear (uncheck) Windows NT Challenge/Response authentication on the IIS computer. To do so:
  1. In Internet Information Service Microsoft Management Console (MMC), click the default Web site.
  2. Select the Exchange Server virtual directory, and on the Actions menu, click Properties, and click the Directory Security tab.
  3. Click Edit in the Anonymous Access and Authentication control box. Here you can select or clear the authentication methods used by the virtual directory. Clear the Windows NT Challenge Response check box.
  4. Click OK back to the MMS console.
  5. Stop and restart the WWW service, either through the MMC, or in the Services tool in Control Panel to allow the change to take effect.