Tips to open PDU file

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

PDU file extension

File Name Protocol Data Unit Message
File Category Document Files

The PDU file is supported on 3 operating systems. Depending on your operating system, you may need different software to handle the PDU files. Below is a summary of the number of programs that support and open the PDU file on each system platform.

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

What is PDU file?

The file with the extension PDU is the Document Files file type. Additionally, the Document Files category contains 574 of other files. Protocol Data Unit Message appears on 3 operating systems as a functional file. The file will work on Linux, Mac OS, Windows systems, unfortunately not on others. The main program that supports this format is Windows Notepad. This was created by Microsoft Corporation. Alternatively, you can use 3 other programs. The TextEdit, gedit, NotePad++ text editor programs will also handle the file when the Windows Notepad program does not fulfill its role.

How to open PDU file?

The most common problem when using Protocol Data Unit Message is that a specific PDU is not associated with the program. Thus, when you open PDU, the program selection wizard or some other program starts. How to solve such a problem?

The first thing you should do is just "doubleclick" on the PDU 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 Windows Notepad

An often overlooked issue is to make sure that Windows Notepad is installed on the computer. The easiest method is to use the system search engine by entering the program name Windows Notepad in it. If it is not, installation may solve the problem, as most applications create file associations during installation. Later in this article you will find a list of programs that can open PDU files.

Programs to open PDU file

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

Step 2. Create association of Windows Notepad with PDU files

If, despite the installed application, the PDU file does not start in the Windows Notepad application, you must create a file association. It is most convenient to call the context menu with the right mouse button and select Properties. The displayed window will contain information about the program that supports this type of file. Using the "Change" button we can select the desired program. If there is no software on the list, simply select "Browse" and manually select the directory where the application is installed. The "always use the selected program ..." field will set the Windows Notepad application as the default for handling the PDU file.

Step 3. Update Windows Notepad to the latest version

If, however, after binding Windows Notepad with Protocol Data Unit Message there were still problems, you should update the program to the latest version. In this case, use the Microsoft Corporation website or update the program from the application.

Step 4. Check for the following problems with the PDU file

If the above steps do not help, you can assume that the file itself is not correct. The most common file problems are:

The PDU file may be unusually small compared to the original file. Usually this applies to PDU files downloaded from the Internet in case the download did not finish properly. The only repair option is to download the file again.
The operating system may be infected with a computer virus. A virus scan using an up-to-date antivirus program should fix the problem. Some antivirus vendors also provide free online scanners. However, it is important to scan the entire system, not only the file PDU or the program directory. As a result of the scan, sometimes it is not possible to recover PDU files, which are deleted if there is a backup of this file, then after restoring it, it must also be scanned.
This can happen especially when the program is dynamically developed and the structure of the PDU files changes over time. Help should be sought from the software developer, as they usually recommend using free file converters or installing an older version of the program.
There can be many reasons for the failure. Depending on the type of file, it is necessary to repair it accordingly. Some programs offer the option of recovering data from damaged PDU files. The easiest way is to restore the file from a backup, if there is one, or contact N/A
The program can also signal the fact of encryption. The encrypted file PDU 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. While there is usually no problem reading such a file, it may not be possible to save it. It is best to move PDU to a different directory.
This problem only occurs with more complex files. Some file types can only be opened in one program at a time. Just close unnecessary programs. If the error persists after closing other programs, wait for a while. However, some background programs may block the PDU file while scanning. If this does not work either, restart the device.