Microsoft KB Archive/191217

= XWEB: VBScript Runtime Error 800a03e3 Using Outlook Web Access =

Article ID: 191217

Article Last Modified on 10/27/2006

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APPLIES TO


 * Microsoft Exchange Server 5.5 Service Pack 1
 * Microsoft Exchange Server 5.5 Standard Edition

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This article was previously published under Q191217



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



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.



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:
 * In Internet Information Service Microsoft Management Console (MMC), click the default Web site.
 * Select the Exchange Server virtual directory, and on the Actions menu, click Properties, and click the Directory Security tab.
 * 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.
 * Click OK back to the MMS console.
 * 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.

Keywords: kbprb KB191217

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