What's the DUP File?

Author:   |   Refreshed: December 05, 2018

Microsoft Silver

DUP File Summary

Our most recent information indicates that DUP files are associated with only a single known file type, the Microsoft Windows DUA Polling Reconfiguration Data format, and can be viewed with the Microsoft Windows software package (developed by Microsoft Corporation). DUP files are traditionally categorized as Settings Files.

DUP files are found on both mobile and desktop platforms and can be opened using Windows operating system. DUP files have a "Low" Popularity Rating; this means that they are not present on most devices.

Although there is a lot more to know about DUP files, those are the most important details of these types of files. If you are having trouble opening these files, or would like more detailed information, please see our comprehensive information below.

Low
Universality
6984
Ranking

/ 11690

Active

Relevance

5

December

2018

Updated

FileViewPro Opens DUP Files

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Varieties of DUP Files


Principal DUP Type

.DUP
File Format:.dup
Type:Microsoft Windows DUA Polling Reconfiguration Data

A DUP file is a settings file associated with Windows operating system. It stores settings for Microsoft Windows DUA (Device Update Agent) service.

Created by: Microsoft Corporation
Function:Settings Files
Subkey: HKEY_CLASSES_ROOT\.dup

Software Programs That Open The Microsoft Windows DUA Polling Reconfiguration Data:


Microsoft Windows by Microsoft Corporation

Windows

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DUP Demand


Device Breakdown

Desktop (84.34%)
Mobile (14.29%)
Tablet (1.37%)


DUP Troubleshooting


Frequent DUP Opening Issues

Missing Microsoft Windows

Double-clicking your DUP file prompts the message "%%os%% Can't Open DUP File". If this is the case, it's usually due to the fact that you do not have Microsoft Windows for %%os%% installed on your computer. This will prevent you from double-clicking to open the DUP file because the OS doesn’t know how to handle it.


Tip: When you have another program installed that you know will open your DUP, you can select it from the other programs listed (see "Show Apps").


Wrong Version of Microsoft Windows is Installed

Sometimes your installed version of Microsoft Windows won't support your Microsoft Windows DUA Polling Reconfiguration Data file. Visit the Microsoft Corporation website to download (or purchase) the latest version of Microsoft Windows. This problem is predominately due to having a Microsoft Windows DUA Polling Reconfiguration Data file version that was created by a newer version of Microsoft Windows than what you have installed on your PC.


Tip: Investigate your DUP file by right-clicking and selecting "Properties" to find clues on what version you need.


Summary: In either case, the majority of problems opening DUP files are related to not having the correct software application installed on your computer.


Additional DUP Opening Issues

Even with the correct version of Microsoft Windows installed, you can still experience difficulties opening DUPs. There can be external issues inside of %%os%% that are causing these errors when opening DUPs. Other contributing causes:

  • DUP file type Registry entries are wrong
  • The DUP file description within the Windows Registry was removed
  • Corrupt install of Microsoft Windows or other DUP-related program
  • Your DUP can't be loaded properly (file corruption)
  • Past or present virus infection has affected your DUP
  • Device drivers of the hardware associated with your DUP file are corrupt or out-of-date
  • Windows has inadequate resources to open your Microsoft Windows DUA Polling Reconfiguration Data file

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