The File Extensions Database


.DEU File Extension

  • Developer by: Adobe Systems Incorporated
  • Category: Various data Files

What is an .DEU file?

.DEU is Adobe Reader German language data

The deu file extension is associated with the Adobe Reader, an app for Microsoft Windows and Apple Mac OS X (macOS) that allows users to read and manage Adobe Portable Document files.

The deu file stores data related to German localization of the Adobe Reader.


How to open:

Probably not meant to be accessed by the user.

How to convert:

Probably cannot be converted to anything else.

How to solve problems with DEU files

  • Associate the DEU file extension with the correct application. On :
    Windows: Right click on any DEU file and then click "Open with" > "Choose another app". Now select another program and check the box "Always use this app to open *.DEU files". Mac: Right click (or Ctrl-click) the DEU file, then click "Open with" > "Other...". Then choose another program and check the "Always Open With" box. Linux: Right click on the file, and select "Open with" and choose another program. iPhone: Tap the file. If you do not see an app to open the file, then tap Share "Share" and choose an app. Alternatively, save the file. Then open the Files app Files app. There long-press on the file, then release your finger. You will see a black menu bar. Then tap "Share" and select an app. Android: Tap the Settings icon on your smartphone, then tap on the Apps section. There tap the Options icon in the top right-hand corner of the screen to change the default apps.
  • Update your software that should actually open .DEU is Adobe Reader German language data. Because only the current version supports the latest DEU file format. Search, therefore, e.g. on the Adobe Systems Incorporated manufacturer website after an available .DEU is Adobe Reader German language data update.
  • To make sure that your DEU file is not corrupted or virus-infected, get the file again and scan it with antivirus software.