Having received another letter in the mail, the user may encounter a situation that some of the information in it is missing and there is winmail.dat in the file list. This file can be downloaded to a computer without any problems, but it cannot be opened by regular means. In this case, important information may be in the winmail.dat file, since, in fact, this file can be called a kind of archive with data. In this article, we will look at why winmail.dat may appear in the file list, and also how to open it better on your Mac.
- Hello fellows, How to merge dat files in mac? I have 12.dat files in my computer with mac operating system and was confused on the proper software needed to merge those 12 files as one. One more thing, can I zip a file using mac operating system? I need some help from you experts. Regards, Chloe Chylly.
- Download Winmail DAT File Viewer 1.3.1 for Mac from our website for free. Our built-in antivirus scanned this Mac download and rated it as virus free. The software is categorized as Productivity Tools. This free Mac application was originally created by YXH Inc.
Mac, Linux, iPad, iPhone, Blackberry and other mobile users should use the free online version. » What is Winmail.dat. Winmail.dat files are in fact TNEF attachments (transport neutral encapsulation format) sent by the Microst Outlook, Outlook Express or Microsoft Exchange applications. Users from other e-mail clients (like Thunderbird or Lotus Notes) or platforms (like Android, Apple, iPad.
Why .dat File Don’t Open Correctly on Mac?
Messages sent from older versions of Microsoft email applications, such as Outlook or Microsoft Exchange, may include an attachment with a winmail.dat in the name. This file is not displayed in the sending application, but is displayed in Mail. In other mailers, it may appear as a MIME section with the name application/ms-tnef. This happens when the sending application uses the TNEF format.
Read more:How to Solve Problems with the Work of the Mail App after Updating macOS?
Open .dat File on Mac
In most cases, DAT files are files that are incorrectly attached to e-mails; they are called “winmail.dat” or “ATT0001.dat”. Follow the steps below:
- Open the email with the attachment. In most cases, winmail.dat;
- Click on the file and selectSave Attachment;
- Go to Download folder;
- Right-click on .dat file and select Open with;
- In the list, select TextEdit;
- In this program, you can open most text files, view the text and find out which program this DAT file works with.
Note: If the .dat file does not open in TextEdit, most likely it is not a text file. Remember that some .dat files are locked and cannot be opened.
Winmail.dat Viewer for Mac
To view the files winmail.dat there are some applications for macOS. Open App Store and search for:
- Winmail.dat Viewer;
- Open Winmail.dat – File Opener.
How To Download Winmail.dat File On Mac
This apps could open winmail.dat files, also apps extremely simple and free.
Conclusion
Please note, I do not recommend downloading files from winmail.dat that are suspicious and are executable, that is, they have the format .exe, .cmd and others. In all other cases, as can be seen from this material, the problem with the .dat format is very easy to solve.
Migration Assistant copies all of your files to your new Mac so that you don't have to copy your files manually.
- If your files are currently on a Windows PC, follow the PC migration steps instead.
- If your new Mac is using OS X Mountain Lion v10.8 or earlier, follow the Mountain Lion migration steps instead.
Check software, settings, and power
- Install all available Apple software updates on both Mac computers. Install any updates for your third-party apps as well.
- Make sure that your old Mac is using OS X Lion or later.
- Make sure that your old Mac has a computer name: Choose Apple menu > System Preferences, then click Sharing and check the Computer Name field.
- Connect both computers to AC power.
Connect the computers to each other
- If both computers are using macOS Sierra or later, just make sure that they're near each other and have Wi-Fi turned on. If either is using OS X El Capitan or earlier, connect them to the same network using Wi-Fi or Ethernet.
- Or connect them using target disk mode and the appropriate cable or adapter. Then start up your old computer in target disk mode.
- Or connect your new Mac to a Time Machine backup of your old Mac.
Use Migration Assistant
On your new Mac:
- Open Migration Assistant, which is in the Utilities folder of your Applications folder.
- Click Continue.
- When asked how you want to transfer your information, select the option to transfer from a Mac, Time Machine backup, or startup disk.
- Click Continue.
On your old Mac:
If you started your old Mac in target disk mode or are migrating from a Time Machine backup, skip these four steps.
- Open Migration Assistant.
- Click Continue.
- When asked how you want to transfer your information, select the option to transfer to another Mac.
- Click Continue.
On your new Mac:
- When asked to select a Mac, Time Machine backup, or other startup disk, click the appropriate icon.
- Click Continue. You might see a security code.
On your old Mac:
If you started your old Mac in target disk mode or are migrating from a Time Machine backup, skip these two steps.
- If you see a security code, make sure that it's the same code as on your new Mac.
- Click Continue.
On your new Mac:
- Choose the backup to transfer information from.
- Click Continue.
Continuing on your new Mac:
- Select the information to transfer from the backup.
- Click Continue to start the transfer. If you have a lot of content, the transfer might take several hours to finish.
Open Dat File Mac
In the example above, John Appleseed is a macOS user account. If you transfer an account that has the same name as an account on your new Mac, you're asked to rename the old account or replace the one on your new Mac. If you rename, the old account appears as a separate user on your new Mac, with a separate home folder and login. If you replace, the old account overwrites the account on your new Mac, including everything in its home folder.
How To Download A Dat File On Mac Download
After Migration Assistant is done, log in to the migrated account on your new Mac to see its files. If you're not keeping your old Mac, learn what to do before you sell, give away, or trade in your old Mac.