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Basic information about DUP file

When there is a problem with opening files with the file extension DUP（*.DUP or *.dup）, you do not need a computer expert. In most cases, using the helpful suggestions of experts contained in our website as well as appropriate programs, you can solve the problem with the DUP file yourself.

There are 1 file types using the DUP file extension in our database. In the further part of this page, you will find detail information about all the DUP file with their brief description and a list of programs that support DUP file sorted by operating systems. The table below provides useful information about the DUP file extension. It answers questions such as:
  • What is the DUP file?
  • How to open a DUP file?
  • What programs do I need to open a DUP file?
  • What programs help to create and edit a DUP file?
  • How to convert DUP files to another file format?
  • How to convert another files to DUP file format?


1.Detail information about DUP file extension: Microsoft Windows DUA Polling Reconfiguration Data

File type Microsoft Windows DUA Polling Reconfiguration Data Category Settings Files
Developer Microsoft File format N/A
Description DUP file is a Microsoft Windows DUA Polling Reconfiguration Data developed by Microsoft. The dup file extension is associated with the Microsoft Windows, an operating system for desktop computers, tablets and smart phones.

The dup file stores settings for Microsoft Windows DUA (Device Update Agent) service.
Software programs that will open, edit or convert DUP files

Windows		 Microsoft Windows



Can't open a DUP file?

When you click a file to open it, operating system examines the filename extension. If operating system recognizes the filename extension, it opens the file in the program that is associated with that filename extension. When operating system does not recognize a filename extension, you receive the following message:

”Can't open this file: example.DUP”。

To open this file, you install one of the applications from the list of software programs that you found here, you should be able to open, edit or convert the file with the DUP extension without any issue.


Where I can download the application that support DUP file?

If you do not know where you can download the application from our list, click on the link (which is the name of the program), you will find more information there on the location where to download the required application. Most often they are the websites of software manufacturers.


How to change file associations?

  • Right-click a file with the extension whose association you want to change, and then click "Open With".
  • In the "Open With" dialog box, click the program whith which you want the file to open, or click "Browse" to locate the program that you want.
  • Select the ”Always use the selected program to open this kind of file” check box.


Can I change the extension of DUP files?

Changing the filename extension of a file is not a good idea. When you change a file's extension, you change the way programs on your computer read/open the file. The problem is, changing the file extension does not change the file format. Select a software program from our list and install it on your computer. If the file has not opened correctly, you have to look for a different software program from our list. Sometimes you have to repeat the operation several times.


What else may cause problems width open a DUP file?

The reasons for the lack of the ability to open a DUP file on your computer may be at least several. The easiest thing is to find a suitable application installed on your computer, which will open a DUP file. If there is still something wrong, you might want to check:

  • Whether the DUP file is damaged.
  • Whether the DUP file is incorrectly linked in the registry entries.
  • Whether the DUP file extension has been accidentally removed from the Windows registry.
  • Whether the installation of an application that supports the DUP file format is incompletely.
  • Whether the DUP file is infected.
  • Whether the drivers of the equipment used for opening a DUP file are up to date.
  • Whether your computer has enough hardware resources to open a DUP file.

If the DUP file still not working with your software after eliminating the above shortcomings? That means that the problem is more complex and requires the help of a specialist.