Article ID: 278061 - Last Review: October 3, 2011 - Revision: 7.0 Email received from a sender using Outlook includes a Winmail.dat attachment
This article was previously published under Q278061 SYMPTOMSYou receive an email message that contains a winmail.dat attachment. This issue may occur if all of the following conditions are true:
This issue is more common when the email message is sent to you over the Internet. CAUSEThe Winmail.dat file is used to preserve Rich Text formatting. Outlook uses it when sending a Rich Text-formatted message. During transport, the content of the message may be changed, preventing the receiving client from being able to read the formatting instructions. In other cases, the receiving client does not use or recognize the winmail.dat file. RESOLUTIONThe data in a winmail.dat file is not usable. To resolve this issue, ask the sender to re-send the message in plain text format. The sender can change the format of the email messages that they send by using the following steps:
The sender can use the following steps to remove the RTF format from the recipient attribute in the Personal Address Book:
STATUSMicrosoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section. MORE INFORMATION
For more information about Winmail.dat
attachments, click the following article numbers to view the articles in the Microsoft Knowledge Base:
149203
(http://support.microsoft.com/kb/149203/
)
Preventing Winmail.dat from
being sent over IMC
138053
(http://support.microsoft.com/kb/138053/
)
How to prevent the Winmail.dat file from being sent to Internet users
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