File Extension FEX

.FEX File

File extension: FEX
File type: Focus File


Notes about the FEX 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 FEX file type is primarily associated with 'Focus File'.

Detailed information for file extension FEX:


Primary association: Focus File

Other applications associated with file type FEX:

  • WebFOCUS / FOCUS / Web390 (Procedure File) by Information BuildersWebFOCUS Developer Studio, users have the ability to create applications locally and then deploy them to the Web server and the EDA Server. An application contains the procedures (.fex files), master files (.mas files), and HTML pages (.htm files) that produce the required output.



To change file associations press Windows Key + X 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.

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