Hi,
You have indicated that Customize Outlook Today button does not work. This issue can often be resolved through the following Registry edit.
IMPORTANT : This 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, please refer to Microsoft Knowledge Base article 256986 "Description of the Microsoft Windows Registry." You can
view this article by clicking on the following link.
http://support.microsoft.com/default.aspx?scid=KB;EN-US;256986
Change setting in registry key
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Quit Outlook
1. From the toolbar click Start, click Run, type "regedit" (without the quotation marks), and then click OK.
2. Navigate to the following registry key:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Internet Explorer\Application Compatibility
3. Click the Edit menu, click New, and then click DWORD Value.
4. Type the following name for the new value:
Value name: outlook.exe
Data type: DWORD
Value data: 1
5. Restart Computer
6. Start Outlook.
Regards,
Scott Atkins MCSE, MCSA
Partner Technical Lead - Outlook
Microsoft Technical Support
for Platforms and Business Applications