Solved

Outlook sends .pdf files as .dat

Posted on 2016-07-18
5
35 Views
Last Modified: 2016-07-19
Sometimes when I send a .pdf file as an email attachment in Outlook 365, the recipient gets a .dat file instead of a .pdf.   How do I prevent this?
0
Comment
Question by:DoctorK12008
5 Comments
 
LVL 14

Expert Comment

by:Edward Pamias
ID: 41717420
Try using HTML as the email format instead of rich text.

To prevent Outlook from attaching winmail.dat when you send an email:

    Click File in Outlook.
    Select Options.
    Go to the Mail category.
    Make sure HTML or Plain Text is selected for Compose messages in this format: under Compose messages.
    Now make sure Convert to HTML format or Convert to Plain Text format is selected for When sending messages in Rich Text format to Internet recipients: under Message format.
    Click OK.
1
 
LVL 51

Expert Comment

by:Joe Winograd, EE MVE
ID: 41717437
Hi DoctorK,
This is a very common, nasty problem, and there is no one solution that works for everyone. If you search EE by putting "winmail.dat" in the search box above, you will get 921 hits with thousands of views among them. I suggest reading some of those threads and trying some of the fixes that worked for other members, but this is definitely a YMMV (Your Mileage May Vary) issue.

I've participated in many questions here at EE on this same problem. Here are several of them:

http://www.experts-exchange.com/Software/Server_Software/Email_Servers/Exchange/Q_28616021.html

http://www.experts-exchange.com/Software/Office_Productivity/Groupware/Outlook/Q_28129365.html

http://www.experts-exchange.com/Software/Misc/Q_28199110.html

http://www.experts-exchange.com/Software/Server_Software/Email_Servers/Exchange/Q_28605102.html

http://www.experts-exchange.com/Software/Office_Productivity/Groupware/Outlook/Q_28512378.html

I hope one of these has a solution that works for you. Regards, Joe
0
 
LVL 41

Accepted Solution

by:
Jackie Man earned 500 total points
ID: 41718089
Agreed.

Have a look of my answered question below also.

O365 and winmail.dat file
https://www.experts-exchange.com/questions/27778217/O365-and-winmail-dat-file.html
1
 

Author Comment

by:DoctorK12008
ID: 41719107
Both answers very helpful.   Thank you.
0
 
LVL 51

Expert Comment

by:Joe Winograd, EE MVE
ID: 41719400
> Both answers very helpful.   Thank you.

You're welcome. But if "both answers [were] very helpful", why did you mark just one of them as a Solution?
0

Featured Post

How your wiki can always stay up-to-date

Quip doubles as a “living” wiki and a project management tool that evolves with your organization. As you finish projects in Quip, the work remains, easily accessible to all team members, new and old.
- Increase transparency
- Onboard new hires faster
- Access from mobile/offline

Join & Write a Comment

Set OWA language and time zone in Exchange for individuals, all users or per database.
Resolve DNS query failed errors for Exchange
This Experts Exchange video Micro Tutorial shows how to tell Microsoft Office that a word is NOT spelled correctly. Microsoft Office has a built-in, main dictionary that is shared by Office apps, including Excel, Outlook, PowerPoint, and Word. When …
To add imagery to an HTML email signature, you have two options available to you. You can either add a logo/image by embedding it directly into the signature or hosting it externally and linking to it. The vast majority of email clients display l…

744 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question

Need Help in Real-Time?

Connect with top rated Experts

12 Experts available now in Live!

Get 1:1 Help Now