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By Scot, 10+ years in IT support and helpdesk ·How these guides are checked
Open OneNote, click Add Section at the bottom to create a broad category (like a folder tab), and click Add Page on the right to create an individual note page within that section.
Checked against Microsoft 365 Roadmap, Microsoft Learn - new Outlook for Windows and between 5 Aug 2026 and 12 Sep 2026. Nothing published in that period has been linked to this guide.
Your notes are spread across sticky notes, a half-finished Word document, and the back of a printout, and none of it is findable a month later. This puts all of it in OneNote: notebooks and sections you can navigate, search that reaches handwriting and text inside images, and a notebook colleagues can work in alongside you — synced via OneDrive to every device you sign in on.
In this guide
OneNote is available on desktop, web, and mobile.
OneNote. Open the app.Note: If a notebook or section tab shows a warning icon and your edits stop reaching your other devices, work through How to Fix OneNote Not Syncing before going any further — the rest of this guide assumes sync is healthy.
OneNote nests three things: a notebook holds sections, and a section holds pages. Knowing which is which is what stops a year of notes becoming an undifferentiated pile.
Note: That filing structure is what makes OneNote the right home for notes you keep and come back to. If what you actually need is a live shared surface a whole team edits at once — a checklist inside a Teams chat that stays current everywhere it is pasted — that is Microsoft Loop's job rather than OneNote's. Understanding OneNote vs Microsoft Loop for Notes sets out which one fits, and how to tell whether your organisation has Loop switched on.
Set up a dedicated notebook for a project or topic.
Project Alpha Notes).Organize your notebook with sections and pages.
OneNote pages are freeform — you can type, draw, and insert content anywhere.
Quick Notes are like digital sticky notes — perfect for capturing ideas without opening a full notebook.
OneNote indexes everything, including text in images and handwriting.
Share an entire notebook for team collaboration.
Note: Sharing a notebook gives people a place to read and add notes; it does not put the content into their chats and emails. When a team needs the same checklist or table live in a Teams conversation, compare the two approaches first in Understanding OneNote vs Microsoft Loop for Notes — it also covers where each one's content is stored, which decides who can still reach it after someone leaves.
Connect OneNote to your daily workflow.
INFO
OneNote saves automatically and continuously syncs to OneDrive. There is no manual save button. If you see a sync error, it usually resolves within a few minutes. Ensure you have an internet connection for sync to work.
| Symptom / Error | Potential Cause | Solution |
|---|---|---|
| Notes not syncing across devices | No internet or OneDrive sign-in issue | Check your internet connection. Sign out and back into your Microsoft account in OneNote. If one notebook or section stays stuck, follow How to Fix OneNote Not Syncing. |
| "Notebook couldn't be opened" | Notebook moved or deleted from OneDrive | Check OneDrive for the notebook folder. If deleted, check the OneDrive recycle bin. |
| Cannot find old notes | Notes are in a different notebook or section | Use Ctrl + E to search across all notebooks. Check the Quick Notes section. |
| "This section is read-only" | Shared notebook with view-only permission | Ask the notebook owner to change your permission to Can edit. |
| Sync conflict — duplicate pages appear | Multiple people edited the same page offline | Open both versions, merge the content manually, and delete the duplicate. |
| Images or attachments not loading | Sync still in progress | Wait for sync to complete (check the sync status icon next to the notebook name). |
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