Article ID: 191217 - Last Review: October 27, 2006 - Revision: 3.2

XWEB: VBScript Runtime Error 800a03e3 Using Outlook Web Access

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SYMPTOMS

When you attempt to log on to Microsoft Exchange Server using the Outlook Web Access (OWA) client, the following error message may appear:
Error '800a03e3'
Unknown runtime error
/exchange/USA/lib/session.inc, line 104
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CAUSE

There are two possible causes. Corrupt components in the installation of OWA on the Exchange Server computer may cause this error to occur. Also, if Exchange is installed on a member server rather than a Primary Domain Controller (PDC) or Backup Domain Controller (BDC), using Windows NT Challenge/Response authentication on the Internet Information Server (IIS) computer may cause this to occur.
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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.
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APPLIES TO
  • Microsoft Outlook Web Access 5.5 SP 1
  • Microsoft Exchange Server 5.5 Standard Edition
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Keywords: 
kbprb KB191217
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Retired KB ArticleRetired KB Content Disclaimer
This article was written about products for which Microsoft no longer offers support. Therefore, this article is offered "as is" and will no longer be updated.
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