How To Open .DAT Attachments
A Reader Asks A Question About Email
Q: “Someone sent me an email with a winmail.dat attachment that will not open. How can I see the attachment?”
A: There are many types of .DAT files. The winmail.dat (sometimes “ATT0001.dat”) file is usually created by Outlook, and is used to preserve the format that is included in the sending client’s message — which may not be recognized by the receiving client. In the case of Outlook, the winmail.dat file includes Rich Text Formatting (RTF) instructions.
Sometimes they can be open using Notepad.
• Download (save) the attachment, and then “rename” the file. Change the “.dat” part to “.rtf“.
• Now double-click on the renamed file. It should open in Notepad, or just as good, Wordpad, and though there will be some “computer gibberish” there, you should be able to read the message.
However some DAT files are of a “binary encoding”- type, which simply means that some, if not most, of the file you’re viewing with Notepad (a text editor) won’t be seen. There are some methods that can “extract” the contents of the .DAT file.
For example, you may try an online converter like http://www.winmaildat.com/ …
Or try opening the attachment in Excel … then try Paint …
Or ask the Sender to resend the email by a different service.. like Gmail. (And send them the following instructions..)
Note: To configure your Outlook to not send people .dat files (and be more popular with your peers) – in all versions of Outlook:
- On the “Tools” menu, click “Options”, and then click the “Mail Format” tab.
- In the “Send in this message format” list, click “Plain Text” or “HTML”, and then click “OK”.
See also: http://support.microsoft.com/kb/278061
Tech News Item: New Mac OS X malware disables Apple’s malware protection
“Security researchers from F-Secure have spotted a Mac OS X malware that disables Snow Leopard’s XProtect.plist antivirus signatures updates.” Read more..
*** A Chance To Win A Valuable Prize! ***
The folks at Novosoft have generously donated 3 licenses for Office Backup 4.0 to me, to award to my readers.
“Office Backup is an easy-to-use backup software designed to perform automated backup of your computer. If you are looking for a simple yet powerful backup utility, you have just found it – Novosoft Office Backup.“
To enter the drawing, please see: Review and Giveaway – Office Backup. Enter my current giveaway and (possibly) win!
Today’s quote: “You learn something every day if you pay attention.” ~ Ray LeBlond
Copyright 2007-2011 © “Tech Paul” (Paul Eckstrom). All Rights Reserved.
No comments yet.
• About Tech Paul
I am a (semi)-Retired CompTIA Certified computer & network technician, and the owner of Aplus Computer Aid. I have been building/fixing networks and computers since Windows 95 was the new kid on the block.
I have regularly posted how-to’s and tricks & tips and general computing advice here since 2007. (Use the Search tool to find answers.) Sometimes I answer (your) specific questions in an article if I believed the answer is generally helpful to “everyone”. All the writing you see is my own, typos and all. There is an implied “IMHO” in what you see here.
You can write to me using this form.
Note: You are responsible for using this blog and its content. I am in no way liable for any losses caused by user error, viruses and/or other malware, hardware or software failure, or any other conceivable reason.
Visitors to date
Previous Tips & Answers (aka Search This Site)
Or use keyword(s)
A Winner’s Blueprint for Achievement
BELIEVE while others are doubting.
PLAN while others are playing.
STUDY while others are sleeping.
DECIDE while others are delaying.
PREPARE while others are daydreaming.
BEGIN while others are procrastinating.
WORK while others are wishing.
SAVE while others are wasting.
LISTEN while others are talking.
SMILE while others are frowning.
COMMEND while others are criticizing.
PERSIST while others are quitting.
~ William Arthur Ward
Site infoTech – for Everyone
Blog at WordPress.com.