Microsoft KB Archive/274745

= OLEXP: Outlook Express Address Book Does Not Load =

Article ID: 274745

Article Last Modified on 5/7/2007

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APPLIES TO


 * Microsoft Outlook Express 5.5
 * Microsoft Outlook Express 5.01 Service Pack 2
 * Microsoft Outlook Express 5.5
 * Microsoft Outlook Express 5.01 Service Pack 1
 * Microsoft Outlook Express 5.5
 * Microsoft Outlook Express 5.01 Service Pack 2

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This article was previously published under Q274745



For information about the differences between Microsoft Outlook Express and Microsoft Outlook e-mail clients, click the following article number to view the article in the Microsoft Knowledge Base:

257824 OL2000: Differences Between Outlook and Outlook Express

IMPORTANT: This article contains information about modifying the registry. Before you modify the registry, make sure to back it up and make sure that you understand how to restore the registry if a problem occurs. For information about how to back up, restore, and edit the registry, click the following article number to view the article in the Microsoft Knowledge Base:

256986 Description of the Microsoft Windows Registry



SYMPTOMS
When you upgrade Microsoft Internet Explorer and Outlook Express to version 5.01 or 5.5 and then you attempt to start Outlook Express, you may receive the following error message:

The Address Book Failed to Load.



CAUSE
This behavior occurs because invalid information about the Windows Address Book exists in the Windows Registry.



RESOLUTION
To resolve this behavior, back up all of your Outlook Express data files by using the steps that are outlined in the following article from the Microsoft Knowledge Base:

270670 OLEXP: How to Back Up and Recover Outlook Express Data

When the back up is complete, edit the Windows Registry to remove the invalid data and then remove and reinstall Outlook Express.

WARNING: If you use Registry Editor incorrectly, you may cause serious problems that may require you to reinstall your operating system. Microsoft cannot guarantee that you can solve problems that result from using Registry Editor incorrectly. Use Registry Editor at your own risk.

How to Edit the Windows Registry
 Click Start, and then click Run. In the Open box, type regedit, and then click OK. In the Registry Editor, remove the following registry key:

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Active Setup\Installed Components\{7790769C-0471-11d2-AF11-00C04FA35D02}

The default value of this registry key is AddressBook5. Close the Registry Editor.

How to Remove and Reinstall Outlook Express

 * 1) Click Start, point to Settings, click Control Panel, and then double-click the Add/Remove Programs icon.
 * 2) On the Install/Uninstall tab, click Outlook Express 5, and then click Add/Remove.

NOTE: This only applies to upgraded versions of Outlook Express on the platforms listed in the &quot;Applies To&quot; section of this article. If an updated version of Outlook Express is not installed, click the Windows Setup tab, and click to select the Outlook Express check box.
 * 1) When you remove Outlook Express, restart your computer.
 * 2) Click Start, point to Settings, click Control Panel, and then double-click the Add/Remove Programs icon.
 * 3) On the Install/Uninstall tab, click Internet Explorer 5.x and Internet Tools, where &quot;x&quot; (without quotation marks) is your current version (5.01 Service pack 1 (SP1) or 5.5), and then click Add/Remove.

NOTE: This only applies to upgraded versions of Outlook Express on the platforms listed at the top of this article. If an updated version of Outlook Express is not installed, click the Windows Setup tab, and then click to select the Outlook Express check box.
 * 1) You will be prompted with three choices after the installer loads. Click Add a Component, and then click Next.
 * 2) Click to select the Outlook Express check box on the list of components. Continue until the installation is complete.
 * 3) Restart your computer.
 * 4) Start Outlook Express, click Tools, and then click Address Book. Both applications should open without any error messages.

Keywords: kbprb KB274745

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