Error 0x800004005 occurs when an IUIAutomation method is called for a node that has many descendant nodes in Windows 7 and Windows Server 2008 R2

Applies to: Windows 7 EnterpriseWindows 7 ProfessionalWindows 7 Ultimate More


Consider the following scenario: In this scenario, the call fails because of a time-out condition. Additionally, a "0x800004005" error is generated.

Note This problem also occurs when the IUIAutomation::ElementFromHandleBuildCache method is called.


Hotfix information

A supported hotfix is available from Microsoft Support. However, this hotfix is intended to correct only the problem that is described in this article. Apply this hotfix only to systems that are experiencing the problem described in this article. This hotfix might receive additional testing. Therefore, if you are not severely affected by this problem, we recommend that you wait for the next software update that contains this hotfix.

If the hotfix is available for download, there is a "Hotfix download available" section at the top of this Knowledge Base article. If this section does not appear, contact Microsoft Customer Service and Support to obtain the hotfix.

Note If additional issues occur or if any troubleshooting is required, you might have to create a separate service request. The usual support costs will apply to additional support questions and issues that do not qualify for this specific hotfix. For a complete list of Microsoft Customer Service and Support telephone numbers or to create a separate service request, go to the following Microsoft website: Note The "Hotfix download available" form displays the languages for which the hotfix is available. If you do not see your language, it is because a hotfix is not available for that language.


To apply this hotfix, you must have Service Pack 1 for Windows 7 or Windows Server 2008 R2 installed.

Registry information

To enable this fix, you must create or modify the following registry subkeys.

Registry subkeys

On x86-based and on x64-based systems: HKEY_CURRENT_USER\Software\Microsoft\UIA
On x64-based systems only: HKEY_CURRENT_USER\Software\wow6432Node\Microsoft\UIA
DWORD name: Timeout
DWORD value: Set to a value in milliseconds (ms)

Restart requirement

You do not have to restart the computer after you apply this hotfix.

Hotfix replacement information

This hotfix does not replace any previously released hotfix.


Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.


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