Outlook Express does not start after you upgrade your operating system to Windows XP Home Edition or Windows XP Professional Edition

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Article ID: 873021 - View products that this article applies to.
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
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SYMPTOMS

If you start Microsoft Outlook Express 6.0 after you upgrade your operating system to Microsoft Windows XP Home Edition or to Microsoft Windows XP Professional Edition, Outlook Express 6.0 quits automatically, and you do not receive an error message.

CAUSE

This issue may occur if one of the following conditions is true:
  • An Outlook Express Identity is corrupted.
  • Microsoft Outlook Express files are corrupted.

RESOLUTION

Use one of the following methods to resolve this issue.

Method 1: Remove the corrupted Outlook Express Identity and then create a new Outlook Express Identity

To remove the corrupted Outlook Express Identity, follow these steps.

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.
  1. Click Start, click Run, type regedit in the Open box, and then click OK.
  2. In Registry Editor, expand the following registry subkey:
    HKEY_CURRENT_USER\Identities\
  3. Locate the user Outlook Express Identity that you want to remove, and then export it to a temporary folder. To do this, follow these steps:
    1. Click the Outlook Express Identity that you want to remove.
    2. On the File menu, click Export.
    3. In the Export Registry File dialog box, select the location of the temporary folder in the Save in list, and then type a file name in the File name box.
    4. Click Save.
  4. Right-click the Outlook Express Identity that you want to remove, and then click Delete.
  5. When you are prompted to confirm the deletion, click Yes.
  6. Quit Registry Editor.
  7. Restart Outlook Express.

Create a new user account and then import all e-mail messages and your address book to the new user account that you created.

Note You must create a backup copy of your e-mail messages and your address book before you import them to the newly created user account.

Method 2: Manually reinstall Outlook Express files

To manually reinstall Outlook Express files, follow these steps.

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.
  1. Click Start, click Run, type regedit in the Open box, and then click OK.
  2. Locate and then click the following registry subkey:
    HKEY_CURRENT_USER\Identities\
  3. Right-click Identities, and then click Delete.
  4. When you are prompted to confirm the deletion, click Yes.
  5. Repeat steps 2 through 4 for the following registry subkeys:
    • HKEY_CURRENT_USER\Software\Microsoft\Outlook Express
    • HKEY_CURRENT_USER\Software\Microsoft\WAB
    • HKEY_LCAL_MACHINE\Software\Microsoft\Outlook Express
    • HKEY_LOCAL_MACHINE\Software\Microsoft\WAB
  6. Quit Registry Editor.
  7. Open Windows Explorer, and then click the following folder
    SystemDrive\Program Files\Outlook Express
    where SystemDrive is the drive where all critical operating system files are installed
  8. Remove all files and folders in the Outlook Express folder.
  9. In Windows Explorer, locate and then click the following folder:
    SystemDrive\Program Files\Common Files\System
  10. In the System folder, locate and then remove the following files:
    • Wab32.dll
    • Wab32res.dll

      Note After you remove files and folders from the Outlook Express folder and System folder, Windows XP File Protection (WAP) uses the Dllcache folder that is located in the SystemRoot\System32 folder to restore the original files back to the Outlook Express folder and System folder from the cache.
  11. Register the copied files in the registry. To do this, follow these steps:
    1. Click Start, click Run, type msimn /reg in the Open box, and then click OK.

      Note This will rebuild the
      Outlook Express
      subkey that is located under the
      HKEY_LOCAL_MACHINE\Software\Microsoft
      subkey.
    2. Click Start, click Run, and then type the following in the Open box:

      regsvr32 “SystemDrive\Program Files\Common Files\System\wab32.dll”
    3. Click OK.

      Note This will rebuild the
      WAB
      subkey that is located under the
      HKEY_LOCAL_MACHINE\Software\Microsoft
      subkey.
  12. Restart your computer, and then log on to the computer using the same user account that you used to remove Outlook Express registry subkeys.

    Note This will automatically rebuild all the Outlook Express registry subkeys that you removed from the
    HKEY_CURRENT_USER
    subkey.

Properties

Article ID: 873021 - Last Review: September 20, 2011 - Revision: 2.0
APPLIES TO
  • Microsoft Outlook Express 6.0
Keywords: 
kbprb KB873021

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