The File Extensions Database


.ARCH File Extension

  • Category: Unknown Files

What is an .ARCH file?

.ARCH is Unknown file extension

The arch file extension seems to be in use for certain files that are mentioned on the internet. However, we have not yet found their original program nor any specific information about it.

If you know some more useful informations about the arch file extension, please let us know in the discussion below or on our forums.


How to open:

This file type is not meant to be opened directly, there is no software that could open and work with it directly, or there is no information available in public sources about opening this file type. This is usually the case of some internal data files, caches, temporary files etc.

How to convert:

As far as we know, this .arch file type can't be converted to any other file format. This is usually the case of system, configuration, temporary, or data files containing data exclusive to only one software and used for its own purposes. Also some proprietary or closed file formats cannot be converted to more common file types in order to protect the intellectual property of the developer, which is for example the case of some DRM-protected multimedia files.

How to solve problems with ARCH files

  • Associate the ARCH file extension with the correct application. On :
    Windows: Right click on any ARCH file and then click "Open with" > "Choose another app". Now select another program and check the box "Always use this app to open *.ARCH files". Mac: Right click (or Ctrl-click) the ARCH 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 .ARCH is Unknown file extension. Because only the current version supports the latest ARCH file format. Search, therefore, e.g. on the manufacturer website after an available .ARCH is Unknown file extension update.
  • To make sure that your ARCH file is not corrupted or virus-infected, get the file again and scan it with antivirus software.