ONEPKG File Extension
Microsoft OneNote Package Format
- File Type onepkg
- Developer Microsoft
- Popularity
- Application Microsoft OneNote
- Category Data Files
What is a ONEPKG file?
Microsoft OneNote Package Format, identified by the ONEPKG extension, is a Data Files type and includes 6196 files.
Microsoft, the developer of the Microsoft OneNote Package Format (ONEPKG), has released file format and 242 programs designed to handle them.
ONEPKG files are compatible with various operating systems, including Mac OS, Windows and Linux as well as mobile platforms such as Apple iOS. There are 4 programs available to open a ONEPKG file, including popular tools like Microsoft OneNote, Microsoft One Note Mobile and Microsoft 365.
MIME types
- application/onenote
Programs that support ONEPKG files
How to open a ONEPKG file?
If you are having trouble opening a ONEPKG file, it usually means the right software is not installed. Choose a program from the list that matches your operating system. Next, visit the official website of the developer, download the software, and install it on your device.
Microsoft OneNote, Microsoft One Note Mobile and Microsoft 365 are recognized as the most popular software solutions for dealing with ONEPKG files. If you wish to install the latest release of Microsoft OneNote, visit the official Microsoft portal and download the edition that works on any operating system.
Once Microsoft OneNote is installed, the OS should configure it as the default tool for opening ONEPKG files.
Set Microsoft OneNote as the default ONEPKG handler
Setting a default program by file type in Windows
- Right-click on your ONEPKG file and choose the "Open With" option. Then click "Choose another app" to continue the process;
- In the pop-up window, find and select the Microsoft OneNote application from the available options;
- Make sure the "Always use this app" checkbox is checked and click "OK" to confirm your choice as the default app for opening ONEPKG files.
Choose an app to open a file on Mac
- Right click or use Control + left click on the desired ONEPKG file to launch the file options menu;
- Select "Open in application" and click "Other";
- Towards the bottom of the window, find the "Enable" menu, which is already set to the default option, "Recommended Programs";
- In this menu, select "All Programs" and search for Microsoft OneNote. Check the box next to "Always open in app" to make it the default option.
How to edit a ONEPKG file?
Editing ONEPKG files requires installing professional software that lets you open and edit data files. Online editors have more limitations compared to dedicated Microsoft OneNote Package Format programs.
List of Top ONEPKG editors 2026
According to these factors, we have compiled a list of available ONEPKG editors.
| ONEPKG Editor Software | Developer | Platforms | Overall Rating |
|---|---|---|---|
| Microsoft One Note Mobile | Microsoft | Apple iOS | 4.6 out of 5 (37 reviews) |
| Microsoft OneNote | Microsoft | Windows, Mac OS | 4.5 out of 5 (39 reviews) |
Convert to and from ONEPKG
If a ONEPKG file is cumbersome, converting it to formats such as PDF, DOC, DOCX or other supported types can make it easier to manage.
Converting a ONEPKG file may not fully retain all functionality, but it is generally possible to return it to the original format.
Convert ONEPKG to other file formats
Effective solutions for ONEPKG file problems
If ONEPKG files are giving you trouble, small modifications to your software can help. Check out the troubleshooting tips below to fix these issues.
What are the possible solutions to recover a corrupt ONEPKG file?
Start a data recovery program and open the damaged ONEPKG file. Go to the menu and select the "Repair" option to repair the file. Allow the recovery process to complete, which will automatically repair the damaged data files.
Are there any symptoms that my ONEPKG file is damaged?
Corrupted ONEPKG data files may show the following signs:
- Opening the file in Microsoft OneNote or other programs causes them to hang or crash;
- Error dialogs are displayed when interacting with the file;
- Opening the file results in an error or a failed attempt;
- Unexpected expansion of the total size of the ONEPKG file;
- Editing the archive in Microsoft One Note Mobile is accompanied by slow performance or delays;
What are the possible causes of Microsoft OneNote crashing?
The absence of software updates can cause Microsoft OneNote to crash. It is recommended to install the latest available updates for Microsoft products.
Restarting your computer can resolve numerous common problems, so it should be the initial step before changing any software-related settings.