File Extension Library


.Y09 File Extension

  • Developer by: Corel Corporation
  • Category: Various data Files

What is an .Y09 file?

.Y09 file extension is created by Corel Corporation. .Y09 has been classified as Various data Files.

.Y09 is Corel Paradox secondary index

The y09 file extension is associated with the Paradox, a relational database management system sold by Corel Corporation, which is part of some editions of Corel WordPerfect Office suite.

The y09 files contain secondary index information.

.Y09 file format is deprecated and this file format is no longer supported.

Currently, .Y09 file type is not actively used and is obsolete. This usually happens with system files in older operating systems, files from long-discontinued software, or with previous versions of some file types (documents, projects, images, etc.) that were replaced in later versions of the original programs.


How to open:

Probably not meant to be accessed by the user.

How to convert:

Probably cannot be converted to anything else.

How to Open .Y09 file on different platforms

Open .Y09 File on Windows

  • Right-click a .Y09
  • Left-click "Open With" > "Choose another app"
  • Select the program that opens .Y09 file and Select check box "Always use this app to open .Y09 files" Press "Ok"

Open .Y09 File on Mac

  • Right-click (or Ctrl + Left-click) the .Y09 file
  • Click "Open With" > "Other.."
  • Then choose another program from the app list and press "Open"
  • Select check box "Turn on" for "Always open in app"

Open .Y09 File on Linux

Right click on the .Y09 file, choose "Open with" and select a program from the list above

Open .Y09 File on iPhone

Select a file. If you don't see an application to open the .Y09 file, tap "Share" and choose the right app.
Method 2
Save the file. Then open the app «Files». Touch and hold the file, then release your finger. You will see a black menu bar. After that tap "Share" and select an application.

Open .Y09 File on Android

Tap the Settings icon on an Android smartphone, then select «Applications». Click the Settings icon in the upper right corner of the screen, to change the default apps.
If you want to open, edit, save or even convert .Y09 files on Android, then your best bet is to download one of the dedicated apps available on Google Play.

How to fix problems with .Y09 files

  1. You need to update the application that you normally use to open .Y09 files. Only the latest version of the software supports the current .Y09 file format
  2. You need to check the .Y09 file for viruses. To do this, you need to scan it with a popular antivirus (Norton, Nod32, Kaspersky, Dr.Web, etc.)