When you access Microsoft Outlook Web Access by using Microsoft Internet Explorer 7 version of Internet Explorer, you experience one of the following symptoms.
On a computer that is running Microsoft Windows Vista, you cannot perform any editing tasks that you typically expect to perform. For example, you cannot perform the following tasks:
• Compose a new e-mail message
• Reply to an e-mail message
Additionally, you may receive a red X error.
Resolution:
To work around this problem, follow these steps.
The following Microsoft Exchange Server 2003 patch is available for download from the Microsoft Download Center and you need to run this patch on your exchange server.