Tips to open MS-TNEF file

Can't open the MS-TNEF file? You are not the only one. Thousands of users face similar problems every day. Below you will find tips on how to open MS-TNEF files as well as a list of programs that support MS-TNEF files.

MS-TNEF file extension

File Name MS Transport Neutral Encapsulation Format
File Developer Microsoft
File Category Misc Files

The MS-TNEF file is supported on 2 operating systems. Depending on your operating system, you may need different software to handle the MS-TNEF files. Below is a summary of the number of programs that support and open the MS-TNEF file on each system platform.

Operating systems
  • 1
  • 2
  • 0
  • 0
  • 0
  • 0

What is MS-TNEF file?

The file with the extension MS-TNEF is the Misc Files file type. The author of this format is Microsoft. Additionally, the Misc Files category contains 6033 of other files. MS Transport Neutral Encapsulation Format is most often found on 2 operating systems. Although it can be found with greater or lesser success on any operating system, it will only be useful on Mac OS, Windows. The Apple Mail application is recommended to open the file. It was released by Apple, Inc.. There are also 2 alternative programs to handle the MS-TNEF file. The Microsoft Outlook programs will also handle the file when the Apple Mail program does not fulfill its role.

How to open MS-TNEF file?

The most common problem when using MS Transport Neutral Encapsulation Format is that a specific MS-TNEF is not associated with the program. This is manifested by the fact that MS-TNEF files open in unusual applications or do not have an assigned program. This problem can be easily remedied.

The first thing you should do is just "doubleclick" on the MS-TNEF file icon you want to open. If the operating system has an appropriate application to support it and there is also an association between the file and the program, the file should be opened.

Step 1. Install Apple Mail

An often overlooked issue is to make sure that Apple Mail is installed on the computer. The easiest method is to use the system search engine by entering the program name Apple Mail in it. If we do not have this program, it is worth installing it, as it will help you automatically associate the file MS-TNEF with Apple Mail. Later in this article you will find a list of programs that can open MS-TNEF files.

Programs to open MS-TNEF file

Remember to download programs supporting MS-TNEF files only from verified and safe sources. We suggest using the websites of software developers.

Step 2. Create association of Apple Mail with MS-TNEF files

However, it may happen that the application itself does not cause the MS-TNEF file to open in the Apple Mail application, but you can set it manually. This option is available from the level of Properties of a specific file available in the context menu. The window will show, among other things, the type of the file and the information by which the program is used to launch the file. Using the "Change" button we can set the program to handle this type. If there is no software on the list, simply select "Browse" and manually select the directory where the application is installed. Checking the "Always use the selected program ..." box will permanently associate the MS-TNEF file with the Apple Mail program.

Step 3. Update Apple Mail to the latest version

The fault may also lie with the Apple Mail program, it is possible that MS Transport Neutral Encapsulation Format requires a newer version of the program. In this case, use the Apple, Inc. website or update the program from the application.

Step 4. Check for the following problems with the MS-TNEF file

The problem may also be with the file itself if the above steps don't work. This could be due to the file itself, the cleanest issues are:

The affected file may be 0 KB or smaller than expected. This suggests truncating the MS-TNEF file contents when downloading or copying. The file should be downloaded again, making sure that the process has finished correctly.
The operating system may be infected with a computer virus. A quick virus scan using an up-to-date antivirus program should clear up any doubts. Alternatively, you can use the scanners available online. However, it is important to scan the entire system, not only the file MS-TNEF or the program directory. However, remember that not every infected MS-TNEF file can be recovered, so it is important to take care of regular backups.
This can happen especially when the program is dynamically developed and the structure of the MS-TNEF files changes over time. These problems are known and are often very easy to fix using the software developers's website.
There can be many reasons for this. The repair method must be adapted to the type of file and damage. Sometimes the program itself has options to repair the most popular MS-TNEF file corruption. The easiest way to restore the file is from a backup or by contacting Microsoft, but this one can be expensive. Not all damage can be reversed.
The program can also signal the fact of encryption. The encrypted file MS-TNEF except for the special designation, works normally, but only on the device where it was encrypted, before transferring it to another machine, decryption is required.
Some operating systems do not allow file operations in certain locations, eg in system directories or directly on the system drive. The problem is only writing to the file, not reading it. Copying the MS-TNEF file to another location will fix the problem.
This problem only occurs with more complex files. You may find that another program you are using is preventing you from working with the file. Just close unnecessary programs. Sometimes it is necessary to wait a while before referencing the MS-TNEF file again. Some anti-virus or backup software may occupy the MS-TNEF file for a certain period of time. If the problem persists, restart the machine.