PDF to winmail.dat

When attaching a PDF file to email (outlook) the recieving file comes in as winmail.dat. Anyone know how to fix this? A real pain.

It came through fine originally from my work email which I have not changed the settings of in over 8 years. I viewed it properly at 6:54 am today as a PDF. I just went back to view it again 30 minutes ago and it was no longer a PDF but this new type. I had already received it so how could it be an issue with Outlook? Would tis not be an issue with iOS 8.1.3?

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I recently purchased an Iphone 6plus and I am receiving pdf attachments that are shown as winmail.dat attachments on the phone. When I check e-mail via my macbook pro the attachment is a pdf and I can open it. Why is this happening?

I recently purchased an Iphone 6plus and I am receiving pdf attachments that are shown as winmail.dat attachments on the iphone. When I check the same e-mail on my macbook pro the attachment is a pdf and I can open it. Why is this happening?

I had this problem too after i upgdatd to OS X Mavericks... only the songs on my iphone 5s that i purchased from itunes would play.
i read something about it being a syncing issue. when you plug your phone into your computer with the usb cable, the person said to switch from automatic syncing of itunes to the "manual" option. mine was already set to manual so i wasn't sure anything would work. BUT, when i plugged my phone into my computer, it started to sync all of my music on my phone again (top of itunes bar where song playing/time is listed said "now syncing 123/534 songs to x's iphone"). once that was completed, i checked the music app on my iphone and everything was back to normal!
so, i would suggest setting your music syncing settings to manual if you haven't tried that yet!
hope this helps!

How do you open a PDF that comes in as a winmail.dat on an iPad2

How do you open a PDF file that comes in as winmail.daton an iPad2? Is there any setting that I need to turn on? Or do i need to purchase a converter to make this work?
Thanks,
firehorse7

You could ask whoever sent it to you to resend the email, but not in rich text format : http://support.apple.com/kb/TS1506
Otherwise there are a number of apps in the store that say that they support winmail.dat (search for 'winmail.dat')

.PDF file arrives as winmail.dat

unable to open pdf files on ipad as the files comes as winmail.dat files. With earler OS this was no problem. Anyone knows a solution???
reg Helge

iPhone, iPad, or iPod touch does not display attachment in email
http://support.apple.com/kb/ts1506
Email received from a sender using Outlook includes a Winmail.dat attachment
http://support.microsoft.com/kb/278061
You can use this app. Winmail File Viewer
https://itunes.apple.com/us/app/winmail-file-viewer/id379500151
 Cheers, Tom

PDF Submit button creates winmail.dat issue...

Hi all,
I am attempting to create a fillable form (PDF) which includes a submit button, which on clicking attaches itself to an e-mail (Outlook 2013), populates the recipients, subject and body text. I have created the document (using a submit form button) and it works perfectly apart from one very large problem... when sent within our company the e-mail is quarantined!
Having spoken to messaging team it appears that this is due to a winmail.dat file.
I am hoping someone can provide some assistance, is the winmail.bat file created by InDesign, or by Acrobat, and is there a way to bypass this/other method to avoid the problem?
Any suggestions welcome.
Thanks

I don't think this file is created by Indesign, Acrobat or any other Adobe software.
I found this http://support.microsoft.com/kb/278061 on searching.
As it state "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."
I would suggest you follow the suggestion in the link above and then check, if it helps.
You can also look at these links :- http://support.microsoft.com/kb/138053 and http://support.microsoft.com/kb/149203
--Manish

WWhy a PDF document attached in email is changed into a WINMAIL.DAT

Why a PDF document is changed into a WINMAIL.DAT format arriving as attachment to my email and becoming impossible to open, using IPad Air?
what to do?

Useful answer, thanks. One more question: as I try to download the Letter open app a .zip archive is shown and a question appears regarding the software I intend to open in order to manage it. I don't find the appropriate. what to do?

HT2614 Saved pdf files arrive on my phone as winmail.dat

I save a pdf file on my computor,then i email it to my phone and it arrives as a winmail.dat file ?

Reconfigure your Windows Mail client.

Some files arrive as winmail.dat even when sent as PDF

Some files arrive as winmail.dat and I cannot open them, even though they had been sent as PDF? Any ideas how to fix this?

The best option is to have Outlook & Exchange users edit their settings...
http://support.microsoft.com/kb/290809
Other than that you need 10.6 or greater...
http://download.cnet.com/1770-20_4-0.html?query=winmail.dat&platformSelect=Mac&t ag=srch&searchtype=downloads&filterName=platform%3DMac&filter=platform%3DMac

.PDF coming in as Winmail.DAT

Anyone know why all of a sudden friends sending me PDF's get converted to WINMAIL.DAT. I can't open them, what can I check?

Mac OS X Mail: What is a winmail.dat attachment?
The attachment means the email was sent from a Microsoft email application (such as Outlook and the Microsoft Exchange Client) and includes rich text information--how fonts, colors and specialized attributes such as underlining or boldface should appear in the email (the attachment doesn't appear in Outlook but does appear in Mail; it may appear in other email applications as a MIME section named "application/ms-tnef")
Avoiding these attachments
To avoid seeing these attachments in the future, you ask the sender to deselect the email's "Send to this recipient in Microsoft rich text format" checkbox or preference setting in mail client before they send the message.
Additional Information
For more information please see this Microsoft support document.
This app may be useful to you: Winmail File Viewer

Can not open winmail.dat PDF file attachments

clients send pdf attachments usually electrical drawings for bid and a winmail.dat pdf file shows in attachment. I click on and error message says can not open this type file. I have adobe reader Why?

If you can't open the attachment, have your client/ customer or whatever fix their defective copy of Outlook and send real mail attachments not TNEF encoded rubbish. They are spewing defective email every time they click send on a mail with an attachment.
See https://support.mozilla.org/en-US/kb/what-winmaildat-attachment

How to advoid Pdf attached files turning into winmail.dat file causing incovinience opening them? And why does the phone automatically changes the file???

The first time i opened the mail, the mail loaded the attactment as pdf file and i was able to open it without any problems. But then when i tried to open it again, i watched the phone automatically turned the pdf file into winmail.dat without any of my control. Since then, i werent able to open the file anymore! And this was lucky that i was able to see it as pdf file - all other attachments i have recieved since using my new ip6 all turn into winmail.dat
this is really incovinient and frustrating for work. i cant believe i cannot just open a pdf file as a pdf file on my ip6 in the emails i recieve. I was on ip4 before this and never have anything like this happened.
Solution needed asap please.
Thankyou!

Hi Jnkm,
I'm sorry to hear you are having issues with your new iPhone 6. If you are getting a winmail.dat file instead of a PDF, you may want to see if it may be the issue noted in the following article:
iPhone, iPad, or iPod touch does not display attachment in email - Apple Support
Regards,
- Brenden

HT1338 pdf attachments and excel spreadsheet attachments are opening as winmail.dat and the pages are blank when you open them.

All of a sudden the e-mail attachments I send to my MacBook Pro from my PC Laptop open up as winmail.dat as a blank sheet of paper. This only started happening within the last week. Before that everything was fine. I check my PC and confirmed the attachments are set up to be sent in HTML. Any suggestions?

I am having the same issue.
Luckily I have only migrated my own mailbox to office365.
Tried both true and false TNEFEnabled on both onpremise and office365 via powershell and confirmed that both have been applied.
If I send the email as a plain text then the attachment works ok. If I send it as HTML then I get winmail.dat.
The above KB doesnt really help me, sending plain text emails is like going back to the dark ages!
I am sending from outlook to outlook (I send from my external email address, to my work email address and visa-versa)
If someone with an onpremise mailbox sends me an email, the attachment works ok.
If someone sends me an attachment via hotmail, the attachment works ok.
It seems to only effect emails I send to myself through outlook, i am sending it through a POP3 account to our onpremise exchange 2010 which forwards the email to office365

TNEF Issue - Winmail.dat or messages stuck in submission queue

Hi guys,
I've looked around the forums and have found people that have had submission queue issues when they set TNEF to $null or $false, and have found that the unified answer is to set TNEF to $true.
I also see folks having issues with recipients in remote domains receiving winmail.dat files in some instances (with a .pdf or .xls file attached) if TNEF is set to $true.
I have both issues. If I set TNEF to $true, I encounter the winmail.dat file problem. If I set TNEF to $false or $null, I encounter the submission queue issue (submission queue states "A transient storage failure occured", and users get a queue
expiration bounce). Neither of these states are acceptable. I cannot have messages stuck in the queue only to be expired, and I cannot have recipients in remote domains failing to receive attachments in emails.
Does anyone have a possible workaround that might resolve this particular situation? It seems that this has been an issue in Exch 2010.
Current Environment Configuration:
I am running Exchange 2013 SP1 Standard on both of my CAS/MBX servers, running on Server 2012 R2 patched to the latest updates. I have an inbound spam filter, but mail outbound is not filtered, therefore the spam filter on our side should not play a role.
I do have not made any changes to the exchange default malware filter either. Other than this issue, mail is flowing correctly and as expected.

I also see folks having issues with recipients in remote domains receiving winmail.dat files in some instances (with a .pdf or .xls file attached) if TNEF is set to $true.
Hi,
According to your description, my understanding is that all the remote domain's recipients would receive winmail.dat files when you send the message to them if TNEF is set to $true, right?
The 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.
I recommend that you refer to the following article to solve the issue:
http://support.microsoft.com/kb/278061
Method 1: Change the default message format
The sender can change the format of the email messages that they send by using the following steps:
On the Tools menu, click Options, and then click
Mail Format.
In Compose in this message format, click to select Plain Text, and then click
OK.
NOTE: To send to certain recipients that use RTF format and others recipients that use plain text format, the sender must set the option for the recipient in either the Personal Address Book or the recipient's contact record.
Method 2: Modify the recipient's entry in the Personal Address Book
The sender can use the following steps to remove the RTF format from the recipient attribute in the Personal Address Book:
On the Tools menu, click Address Book.
In Show Names From, click the Personal Address Book.
Select the addressee that you want to set as plain text, and then click
Properties on the File menu.
In the SMTP-General tab, click to clear the Always send to this recipient in Microsoft Exchange rich text format check box, and then click
OK.
Method 3: Change the specific contact format
The sender can use the following steps to set plain text in the recipient's contact record:
Open the recipient's record in the Contacts folder.
Double-click the recipient's e-mail address.
In the E-Mail Properties dialog box, click Send Plain Text only under
Internet Format.
Method 4: Set the Outlook Rich Text Format Internet e-mail setting
In Outlook 2003 and Outlook 2007, click Options on the Tools menu.
Click the Mail Format tab.
Click Internet Format.
Under Outlook Rich Text options, click either Convert to HTML format or
Convert to Plain Text format.
Hope this helps!
Thanks.
Niko Cheng
TechNet Community Support
Niko,
The Winmail.dat issue is only part of the problem, as described in my original post. For these messages (which it's a different set of messages every time, and it's becoming impossible for me to track them all down), if I set exchange or outlook to encode
the message in Rich Text, the message gets encoded and sent to the recipient. Some of our recipients will reject the message because it is rich text, others receive a winmail.dat file.
However, if I set exchange to not encode messages (TNEF= $false or $null), the message becomes stuck in the submission queue and eventually times out with an error resembling "Storage Transient Failure".

Problem with winmail.dat Attachments in our company

First, i did read all Entries in this Community about winmail.dat, but there's no entry for my problem.
We use exchange server 2010 and outlook 2010. All Mails are written as HTML-Mails. There's no RTF Mails in our company.
The problem ist, our cio ist using a ipad with a hotmail mal address and most mails with attachments arrives as winmail.dat on the ipad.
But not all!
I could verify, that a Mail with doc, pdf, xls attachments was opened ok on a iphone4s (with ios6) but showed as winmail.dat on ipad3 (ios6) at the same time!
Has anyone a explanation to this?

Winmail.dat files are attachments sent by Microsoft mail applications (Outlook, Outlook Express or Exchange) on a proprietary RTF format called TNEF (transport neutral encapsulation format).
An e-mail containing an winmail.dat attachment looks like an empty e-mail with only one attachment. The original e-mail information like subject, body and attachments is packed into a single winmail.dat file, which in some cases also receives a generic name like information01.dat.
If you wanna open it, you should download a winmail viewer.
Hope this help u!
<Link Edited By Host>

Winmail.dat

Why are my attachements only recently coming in as winmail.dat? I have never had issues opening word, pdf or excel docs on iphone or ipad in the past. I have the doc 2 go app as well so I don't know why suddenly they don't open??

Bvjed et al.
My wife has just had this issue and after digging around I found what was causing HER issue.
Situation:
Some email recipients were receiving a .pdf file as a winmail.dat file but this was not everyone and only affected those on iPad/iPhone that could not receive/interpret RTF formatted emails. Anyone opening the email on a Windows PC (and I haven't tested on Mac or other devices such as Android etc) would see the .pdf attachment and it would open normally.
Analysis:
There are plenty of advise/recommendations saying that .pdf files attached to emails formatted in RTF format may not be able to be received if the receiving client cannot handle RTF. HOWEVER, it is important to understand HOW emails are converted/formatted in RTF by Outlook (various versions). One method that most users have checked is the Mail Format setting within each email as either HTML, Rich Text or Plain Text. The other method that is much less obvious is the setting at each email address level and you can check this by right-clicking on the recipient's email address and selecting Outlook Properties. Assuming you do not have the person's contact details in a contact record, it will show a small Email Properties window. Note the last field called Internet Format and if it states "Send using Outlook Rich Text Format" then that recipient would be unable to open .pdf attachments that you send them if they are using an IOS mobile device.
Solution:
Change this value to "Let Outlook decide the best sending format" and send the email & attachment again.
This explains why some people found the solution to be deleting the entry from their Outlook Contacts - it someone reinstated the format option to the "Send using Outlook Rich Text Format" for future emails. How that happens is for someone else to determine! ;-)
Please like this if it helps you.
Cheers
Mark

PDF to winmail.dat

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