ONETMP File Extension
Microsoft OneNote Temporary
- File Type onetmp
- Developer Microsoft Corporation
- Popularity
- Application Microsoft OneNote
- Category Temporary Files
What is a ONETMP file?
Files with the ONETMP extension are specifically tied to Microsoft OneNote Temporary, a Temporary Files type, and there are 241 files in this category.
The Microsoft OneNote Temporary (ONETMP) was created by Microsoft, a company that developed file format and produced 242 programs for their use.
ONETMP files are supported by Windows. If you need to create a ONETMP file, you can use one of 2 programs, such as Microsoft OneNote and Microsoft Office.
How to open a ONETMP file?
If you’re having difficulty opening a ONETMP file, it is often due to not having the correct software. To solve the problem, choose a compatible program from the list. Then follow the link to the official developer site, download the software, and install it on your device.
Microsoft OneNote and Microsoft Office stand out as the preferred programs to manage ONETMP files effectively. To install the latest version of Microsoft OneNote on your computer, visit the Microsoft website where you can download the version available for all operating systems.
After installation, your operating system should automatically open ONETMP files with Microsoft OneNote.
Set Microsoft OneNote as the default ONETMP handler
Choose an app to open a file on Mac
- Right click or use Control + left click on the desired ONETMP file to launch the file options menu;
- Choose "Open in Application" and click "Other";
- Next, at the bottom of the window, you will see the "Enable" menu, in which "Recommended Programs" is selected by default;
- In this menu, select "All Programs", then find Microsoft OneNote and check the box next to "Always open in the application."
Set default programs for Windows
- Start by right-clicking on your ONETMP file, then select "Open With" and continue by clicking "Choose another app" from the options provided;
- 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 ONETMP files.
Effective solutions for ONETMP file problems
There are some common issues with ONETMP files that can be resolved easily by making minor adjustments to your software. Below, you’ll find these issues along with practical troubleshooting tips.
What are the methods to detect if my ONETMP file has been corrupted?
ONETMP temporary files that have become corrupted may display one or more of the following symptoms:
- An unexplained increase in the size of the ONETMP file;
- Trying to work with the archive in Microsoft OneNote or other programs causes instability or program crashes;
- The file does not open correctly or displays error messages;
- While working with the file, error alerts are encountered;
- The file exhibits poor performance during editing operations in Microsoft OneNote;
Why does Microsoft OneNote crash?
Insufficient software updates can contribute to Microsoft OneNote crash. To avoid this, make sure that you have installed the latest 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.
How to repair a corrupted ONETMP file?
Open the damaged ONETMP file in a recovery program and select the "Repair" menu item to start the repair operation. Please wait patiently for the recovery process to finish as it will automatically repair the damaged temporary files.
How to edit a ONETMP file?
To make changes to ONETMP files, you need specialized software that allows both opening and editing the temporary files. Online ONETMP editors offer fewer capabilities than applications optimized for Microsoft OneNote Temporary.
Best ONETMP editors 2026
Based on these criteria, we have prepared a list of available ONETMP editors.
| ONETMP Editor Software | Developer | Platforms | Overall Rating |
|---|---|---|---|
| Microsoft OneNote | Microsoft | Windows, Mac OS | 4.2 out of 5 (43 reviews) |