![]() The best solution is to contact the message sender and inform them that their copy of Outlook is incorrectly configured as suggested in the Microsoft Support article. This add-on is not provided or supported by Mozilla and its compatibility with future versions of Thunderbird is not assured. There is also a Thunderbird add-on called LookOut which tries to decode the TNEF attachment ( winmail.dat) and display the original attachments in Thunderbird's message pane. 3 Navigiere zur winmail.dat Online Reader Seite unter. Winmail File Viewer 4+ The premium winmail.dat reader Pham Pham 1.0 4 Ratings Free Offers In-App Purchases Screenshots Mac iPhone iPad Winmail File Viewer No.1 app to open winmail.dat files Winmail File Viewer lets you view and extract attachments in winmail.dat files. 2 Klicke auf die Datei winmail.dat und ziehe sie auf den Desktop deines Computers oder klicke sie mit der rechten Maustaste an und wähle die Option, sie auf dem Desktop zu speichern. This app is available only on the App Store for iPhone, iPad, and Mac. ![]() To prevent this file from being attached to messages, the sender of the message (or their system administrator) can configure various options as described in this Microsoft Support article. Mit einem Online Reader 1 Öffne die E-Mail mit der winmail.dat-Datei. Even if your system is capable of displaying the file, it does not contain any useful information. Because this file is in a Microsoft proprietary Outlook/Exchange format, you may not have an application installed that can decode this file and display it. If you try to open winmail.dat, you will probably be prompted to specify the application that should be used to open the file. Because of this, any attachments sent with the original message are not displayed in Thunderbird's message pane. The winmail.dat is a Windows Mail data file, after all. Supports iPhone 6, iPhone 6 Plus, iPad 3, iPad Air, iPhone 5, iPhone 5S. The file is not recognized by other email clients. Winmail dat Viewer for iPhone 6 and iPhone 6 Plus. This file contains formatting information for messages that use Microsoft's proprietary TNEF standard and any attachments sent with the original message. Removing the contacts from the Outlook cache (pressing the little X next to the contact name) fixed the issue.When people send messages from incorrectly configured Microsoft Outlook email clients, a file attachment called winmail.dat may be added as an attachment to the message. In other cases, the receiving client (Apple Mail) does not use or recognize the winmail.dat file. During transport, the content of the message may be changed, preventing the receiving client from being able to read the formatting instructions. ![]() Outlook uses it when sending a Rich Text-formatted message. The iOS version was just an unrelated coincidence. The Winmail.dat file is used to preserve Rich Text formatting. I changed those settings a long time ago, so all new contacts had no problem, but some of the old ones which were cached were still receiving RTF formatting. If a contact is in the auto-complete cache, Outlook will retain the original settings for that contact, even if the global settings are changed ( reference). Some email recipients on IPhones using Apple Mail and Gmail receive winmail.dat attachments in place of correctly-encoded MIME attachments from users. At least in my case, in the end it did turn out to be a sender (Outlook) problem, but a tricky one, as follows: Autocomplete is when you start typing an email address in a new message, and their email address comes up as a suggestion. However the fact that it works on older iOS versions indicates that something did break on the receiver side.Įdit: Having done some more research, I would like to retract my statement. If you’re still experiencing winmail.dat problems If you’ve completed the above steps and you’re still experiencing winmail.dat problems, you’ll need to remove the autocomplete entry for all of your recipients. Granted, it's possible that the Exchange overrides this and forces RTF. I verified that my Outlook is configured to send HTML (not RTF) to internet addresses. However, an older iPhone 3GS on iOS 4 receives them just fine, as do a few Android-based phones. iOS 8 devices cannot receive emails sent from my Outlook account. However, the OP stated that the problem started after upgrading to iOS 8.0.2, which implies it worked before, without any settings changed on the senders' side. The problematic Outlook settings have been known for years. I tend to believe this answer is incorrect, or at least not fully correct.
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