.12O File

.12o is EditPlus data

Key Features: .12O File Extension

Features	Description
File Extension	.12o
Format	N/A
Created by	ES-Computing
Category	Various data

What's on this Page

How to open:
How to convert:

What is an .12O file?

The 12o file extension is associated with the EditPlus, a source codes and text editing software for Microsoft Windows operating system, developed by ES-Computing.

The 12o file stores some kind of data used by EditPlus.

How to open:

Probably not meant to be accessed by the user.

How to convert:

Probably cannot be converted to anything else.

ES-Computing

Various data

N/A

How to solve problems with 12O files

Associate the 12O file extension with the correct application. On :
Windows: Right click on any 12O file and then click "Open with" > "Choose another app". Now select another program and check the box "Always use this app to open *.12O files". Mac: Right click (or Ctrl-click) the 12O 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 .12O is EditPlus data. Because only the current version supports the latest 12O file format. Search, therefore, e.g. on the ES-Computing manufacturer website after an available .12O is EditPlus data update.
To make sure that your 12O file is not corrupted or virus-infected, get the file again and scan it with antivirus software.