The operation is unsuccessful when you try to install an ActiveX control or an add-in on a Windows XP-based client computer (900905)


The information in this article applies to:

  • Microsoft Windows XP Professional
  • Microsoft Windows XP Home Edition
  • Microsoft Windows XP Tablet PC Edition
  • Microsoft Windows XP Media Center Edition

SYMPTOMS

When you try to install an ActiveX control or an add-in on a Windows XP-based client computer, the operation is unsuccessful.

CAUSE

This problem may occur if the following conditions are true:
  • The ActiveX control or the add-in is self-signed.
  • The "Enable trusted publisher lockdown" policy is enabled in the Group Policy Object Editor.

RESOLUTION

To resolve this problem, use the Group Policy Object Editor to disable the "Enable trusted publisher lockdown" policy. To do this, follow these steps:
  1. Click Start, click Run, type gpedit.msc in the Open box, and then click OK.
  2. In the Group Policy Object Editor, expand User Configuration under Local Computer Policy.
  3. Expand Windows Settings, and then expand Internet Explorer Maintenance.
  4. Click Security, and then in the right pane, double-click Authenticode Settings.
  5. In the Authenticode Settings dialog box, click to clear the Enable trusted publisher lockdown check box.
  6. Click OK.

REFERENCES

For more information, click the following article numbers to view the articles in the Microsoft Knowledge Base:

822798 You cannot install some updates or programs

280579 How to install ActiveX controls in Internet Explorer using the Active Directory

Author: gaels
Writer: v-lucylu
Tech Reviewer: felixwu
Editor: v-rhowar
Modification Type:MinorLast Reviewed:7/6/2005
Keywords:kbtshoot kbprb KB900905 kbAudEndUser
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