Exchange OWA VBScript Runtime Error Message

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Article ID: 272135 - View products that this article applies to.
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When you try to use the Microsoft Outlook Web Access (OWA) Logon.asp file on a BackOffice Small Business Server-based computer, you may receive the following error message:
"Microsoft VBScript runtime error '800a01a8' Object required: 'Application(...)' /exchange/USA/logon.asp, line 12"


This issue can be caused by the Microsoft Exchange virtual directory in Microsoft Internet Information Services (IIS) not being set to run as a program (this is designated by the blue box icon in IIS Manager). If the virtual directory is not created as a program during the installation of Exchange OWA, OWA will not run. The installation of OWA should create the virtual directory as a program. However, if this does not occur, no error messages are generated.


To resolve this issue:
  1. Start Internet Service Manager.
  2. Right-click the Exchange virtual directory, and then click Properties.
  3. Click the Virtual Directory tab.
  4. Under Application Settings, click Create, and then name the object. Note that name is not required for the program.
  5. Close the properties for the Exchange virtual directory.
NOTE: After you click the Create button, the Name box should become available.


If the attempt to create a program does not work, this may indicate a problem with Transaction Server (Transaction Server processes all IIS virtual directories running as programs), and the permissions that are associated with the installed Transaction Server packages. If this is the case, you may receive the following error message:
An error occurred reading or setting a configuration parameter (0x80110501)
To test Transaction Servers configuration, start the Internet Service Manager to manage (IIS), and then double-click the following items to expand them:
Microsoft Transaction Server
My Computer
If the permissions on the Transaction Server Packages are not set correctly, you may be prompted to reset them during the preceding steps. When you are prompted to do so, allow the permissions to be reset to the system defaults. After the permissions are reset, restart the server.

After you restart the server, repeat the preceding steps. If at this point the virtual directory can be set to a program, use Exchange Setup to uninstall and then reinstall OWA.

This problem may be indicative of an unsuccessful Microsoft Windows NT Option Pack (NTOP) installation. To verify your NTOP installation, review the following information:
  • When you installed the Windows NT Option Pack, you received any of the following error messages:
    InstallDTC: Write of TM
    The command "%SYSTEMROOT%\System32\msdtc" -install -a -d "%SYSTEMROOT%\System32" -l "%SYSTEMROOT%\System32\DTCLOG" failed Error Code = 0xffffffff (where %SYSTEMROOT% is the location of the WINNT directory)
    An exception occurred while installing MSDTC service. Error Code = 0x80004005
    Microsoft Transaction Server setup was not completed successfully
  • When you removed the Windows NT Option Pack, you received any of the following Microsoft Transaction Server Setup error messages:
    Call to ICatalogUpdate:ApplyChanges failed. Error Code = 0x8007000e
    An exception was thrown while trying to remove the MTS packages. Error Code = 0x8007000e
    Setup of "Transaction Server Core Components" failed. The specific error code is 0x358dd88. Setup will continue but the component may not function properly
    Microsoft Transaction Server setup was not completed successfully
NOTE: If you encountered any of the preceding error messages, you must reconfigure NTOP before you reinstall Exchange OWA.


246311 Err Msg: An Error Occurred Getting or Setting a Configuration Parameter 0x80110401


Article ID: 272135 - Last Review: January 25, 2005 - Revision: 4.0
  • Microsoft BackOffice Small Business Server 4.0
  • Microsoft BackOffice Small Business Server 4.0a
  • Microsoft BackOffice Small Business Server 4.5
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