| File Extension: | DUP |
| File Type Description: | Microsoft Windows DUA Polling Reconfiguration Data |
| File Type Developer: | Microsoft Corporation |
| Primary Associated Software: | Microsoft Windows |
| Primary Software Developer: | Microsoft Corporation |
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The DUP file extension is a Microsoft Windows DUA Polling Reconfiguration Data file developed originally by Microsoft Corporation for Microsoft Windows. Website visitor analysis indicates that DUP files are commonly found on Windows 10 user machines, and are most popular in United States. A vast majority of these users are opting to use Google Chrome as their preferred internet browser.
 | Microsoft Windows by Microsoft Corporation |
| Windows 10 | Windows 11 | Windows 6 | Windows 8.1 |
 | Windows |
| Extension | File Type Developer | File Category | File Type Description |
|---|---|---|---|
| .ML | Robin Milner | Developer Files | ML Source Code File |
| .XDR | Microsoft Corporation | Settings Files | XML-Data Reduced File |
| .ARV | Microsoft Corporation | Data Files | Microsoft Autoroute User Information File |
| .CONTACT | Microsoft Corporation | Data Files | Windows Contact File |
| .OBT | Open Source | Settings Files | Openbox Theme File |
| .GR2 | Larian Studios | Game Files | Divinity: Original Sin Game Data |
| .VSW | Microsoft Corporation | Settings Files | Visio Workspace File |
| .LDS | GNU Project | Developer Files | Binutils LD Linker Script |
| .VCP | Microsoft Corporation | Developer Files | eMbedded Visual C++ Project File |
| .5D | Microsoft Corporation | Database Files | Microsoft Works File |
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