File Extension ONE

Written by:   |   Amended: November 26, 2018

Microsoft Silver

ONE File Summary

The ONE File Extension has one primary file type, OneNote Document format, and can be opened with Microsoft OneNote released by Microsoft Corporation. These files can be categorized as Data Files.

File Extension ONE is supported by Windows, Mac, and iOS operating systems. These types of files can be found on both desktop and mobile devices. The Popularity Rating for ONE files is "Low", which means these files are not ordinarily found on an everyday user's device.

Although there is a lot more to know about ONE files, those are the most important details of these types of files. If you are having trouble opening these files, or would like more detailed information, please see our comprehensive information below.

Low
File Type Popularity
8233
Ranking

/ 11690

Active

Status

26

November

2018

Updated

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Known ONE Files


Main ONE Affiliation

.ONE
Formatting:.one
Classification:OneNote Document

ONE file contains one or more sections for storing one or more pages. It may contain text, digitized handwriting, images, drawings, and audio/video clips.

Author: Microsoft Corporation
File Category:Data Files
Subkey: HKEY_CLASSES_ROOT\.one

Software Programs That Open The OneNote Document:


Microsoft OneNote by Microsoft Corporation

Windows
Windows Phone
Mac
iOS
Android

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ONE Demand


Device Breakdown

Desktop (84.34%)
Mobile (14.29%)
Tablet (1.37%)


Sources of ONE Problems


Typical ONE Opening Challenges

Microsoft OneNote Isn't There

You attempt to load your ONE file and get an error such as "%%os%% Can't Open The ONE File Extension". If this is the case, it's usually due to the fact that you do not have Microsoft OneNote for %%os%% installed on your computer. You won't be able to double-click to open your ONE because your OS doesn't know what to do with it.


Tip: When another ONE application is installed, you can choose to open it by selecting "Show Apps" and using that program.


Microsoft OneNote Requires Update

Your OneNote Document file is incompatible with Microsoft OneNote because you might have the wrong version installed. Download the latest Microsoft OneNote version from the Microsoft Corporation website to ensure you have the correct one installed. The primary cause of this problem is that your OneNote Document file was created by a different (newer) version of Microsoft OneNote than what's installed.


Tip: Sometimes you can get a clue about the version of ONE file you have by right clicking on the file, then clicking on "Properties" (Windows) or "Get Info" (Mac OSX).


Conclusion: The majority of ONE file opening issues are due to not having the correct Microsoft OneNote version installed.


Other ONE File Opening Causes

Assuming you have the right Microsoft OneNote version installed, other problems can prevent you from opening ONE files. If you're still experiencing problems opening ONE files, there could be other computer problems. Additional factors include:

  • File references in the Windows Registry for ONE are wrong
  • The ONE file description within the Windows Registry was removed
  • Incomplete or bad installation of a software application associated with the ONE format
  • The ONE itself is corrupted
  • Malware-tainted ONE file can't be opened
  • ONE-related hardware has device drivers that obsolete
  • Windows cannot load your OneNote Document file due to insufficient resources (eg. RAM)

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