File Extension DUN

.DUN File

File extension: DUN
File type: Dial-Up Networking Export File


Notes about the DUN file extension:



Incorrect file associations could be the result of underlying issues within your PC system. As such it is highly recommended to scan your PC for invalid registry entries, unused processes and other unfavourable system settings to identify slowdown issues.

The DUN file type is primarily associated with 'Dial-Up Networking Export File'.

Detailed information for file extension DUN:


Primary association: Dial-Up Networking Export File
Related links: DUN Info

Other applications associated with file type DUN:

  • Dunce File



Important: Invalid file associations could be the result of underlying issues within your Windows PC. It is highly recommended that you scan your PC for invalid registry entries, unused processes and other slowdown issues.

Technical data

To view technical data on file-extension DUN click this link to expand/hide the additional area.

System Info for File Extension .DUN

The following listing is compiled from the database produced by the 'Associate This!' program, selected data from the main FILExt database and information FILExt collected directly from user systems.

ProgramID: dunfile, FileType: Dial-Up Networking Exported file, AppName: Dial-Up Networking User Interface
EXEFile: RNAUI.DLL

ProgramID: dunfile, FileType: Dialup Networking File, AppName: Network Connections Shell
EXEFile: NETSHELL.DLL

ProgramID: dunfile
EXEFile: %SystemRoot%\system32\RUNDLL32.EXE NETSHELL.DLL,InvokeDunFile %1

ProgramID: dunfile
EXEFile: %SystemRoot%\SysWow64\RUNDLL32.EXE NETSHELL.DLL,InvokeDunFile


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