Microsoft KB Archive/277015

= OLEXP: Outlook Express Does Not Start from the Mail Button in Internet Explorer =

Article ID: 277015

Article Last Modified on 1/29/2007

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APPLIES TO


 * Microsoft Outlook Express 5.5
 * Microsoft Outlook Express 5.01 Service Pack 2
 * Microsoft Outlook Express 5.0
 * Microsoft Outlook Express 5.5
 * Microsoft Outlook Express 5.01 Service Pack 1
 * Microsoft Outlook Express 5.0
 * Microsoft Windows 98 Standard Edition
 * Microsoft Windows 98 Second Edition

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This article was previously published under Q277015



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
Outlook Express does not start when you click the Mail button, and then click Read Mail in Microsoft Internet Explorer. Outlook Express is verified as installed and starts from the Run dialog box. Additionally, it may not be listed as an available e-mail program in Internet Explorer's Internet Options.



CAUSE
This behavior can occur because of missing or invalid registry key entries.



RESOLUTION
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.

Make sure that the following registry keys are in place and have the correct values. You may need to add them or parts of them. To start Registry Editor, click Start, and then click Run. In the Open box, type regedit, and then click OK.

'''HKEY_LOCAL_MACHINE\Software\Clients\Mail\Outlook Express\Envelope

HKEY_LOCAL_MACHINE\Software\Clients\Mail\Outlook Express\Envelope\CLSID

Default Value=&quot;{A08AF898-C2A3-11d1-BE23-00C04FA31009}&quot;

HKEY_LOCAL_MACHINE\Software\Clients\Mail\Outlook Express\Envelope\CurVer

Default Value=&quot;OutlookExpress.Envelope.1&quot;

HKEY_LOCAL_MACHINE\Software\Clients\Mail\Outlook Express\Protocols

HKEY_LOCAL_MACHINE\Software\Clients\Mail\Outlook Express\Protocols\mailto

Default Value=&quot;URL:MailTo Protocol&quot;

&quot;EditFlags&quot;=hex:02,00,00,00

&quot;URL Protocol&quot;=&quot;&quot;

HKEY_LOCAL_MACHINE\Software\Clients\Mail\Outlook Express\Protocols\mailto\DefaultIcon

Default Value=&quot;C:\PROGRAM FILES\OUTLOOK EXPRESS\MSIMN.EXE,-2&quot;

HKEY_LOCAL_MACHINE\Software\Clients\Mail\Outlook Express\Protocols\mailto\shell

HKEY_LOCAL_MACHINE\Software\Clients\Mail\Outlook Express\Protocols\mailto\shell\open

HKEY_LOCAL_MACHINE\Software\Clients\Mail\Outlook Express\Protocols\mailto\shell\open\command

Default Value=&quot;&quot;C:\PROGRAM FILES\OUTLOOK EXPRESS\MSIMN.EXE\&quot; /mailurl:%1&quot;

HKEY_LOCAL_MACHINE\Software\Clients\Mail\Outlook Express\shell

HKEY_LOCAL_MACHINE\Software\Clients\Mail\Outlook Express\shell\open

HKEY_LOCAL_MACHINE\Software\Clients\Mail\Outlook Express\shell\open\command

Default Value=&quot;&quot;C:\PROGRAM FILES\OUTLOOK EXPRESS\MSIMN.EXE\&quot; /mail&quot;'''

Keywords: kbprb KB277015

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