Notes about the DUPX file extension:
To open this file type, a required software must be installed. Without it you only see a Windows message "The following file cannot be opened
" (Windows 7) or "How do you want to open this file?
" (Windows 10) if you double-click the file. There click on "More apps"
and choose a suitable software to view such files on your PC or from email attachments.
The DUPX file type is primarily associated with 'DuupeCheck' by Logix Business Integration. DuupeCheck is a data cleansing and migration utility developed by Logix Business Integration that allows you to find duplicate records in Salesforce.com or in an Excel or CSV file, merge them, and update your database through the Salesforce.com API, SQL statements generated by DuupeCheck, or export/import of Excel and CSV formatted files. This file includes all settings, version information, project description and data related to a DuupeCheck project. Records imported into the project are stored separately in XML and XSD files with the same root file name in the same directory.
Detailed information for file extension DUPX:
File classification: XML
Mime type: application/xml
To change file associations press Windows Key
and then Apps and Features
> Default apps
> Choose default apps by file type
Invalid file associations could be the result of underlying issues within your Windows PC.