Office for Mac Issues

How to Fix Slow Copy and Paste in OneNote for Mac

Steve KSteve K Nov 3, 2026 868 views

Question details

The user experiences a significant delay when copying and pasting text within the same page in OneNote on macOS.

How to Fix Slow Copy and Paste in OneNote for Mac
Product
Microsoft OneNote
Device & OS
macOS
Scenario
Copying and pasting text or elements within a OneNote notebook.
Observed behavior
The copy-and-paste action is unusually slow, typically caused by a corrupted application cache or incomplete cloud synchronization.
Before you start

Before making any changes to the application cache, confirm that all your important notes are fully synchronized by logging into OneNote Online, or manually back up unsynchronized notes to a Word document.

Solution 1Recommended

Safely Clear the OneNote Application Cache

Moving the application cache forces OneNote to rebuild its temporary files, which often resolves severe performance issues like slow copying and pasting.

The macOS version of OneNote heavily relies on cached data to bridge the gap between your local actions and cloud synchronization. When this cache becomes bloated or corrupted, basic functions like copy and paste can degrade significantly.

Clearing the cache safely involves moving it to the Desktop rather than deleting it immediately, ensuring you have a fallback if unsynced data goes missing.

1
Verify Synchronization Online

Open your web browser and navigate to OneNote Online. Check your recent notebooks to confirm that your latest notes have been successfully synced to the cloud.

2
Quit OneNote Completely

Ensure OneNote is fully closed. Right-click the OneNote icon in your Mac's Dock and select Quit.

3
Move the Cache to Desktop

Open Finder, locate your OneNote cache folder within your user Library folder, and drag it to your Mac Desktop.

4
Restart OneNote and Test

Relaunch the OneNote application. Try copying and pasting text within a notebook to see if the speed has returned to normal.

5
Submit Diagnostic Feedback

If the issue persists, go to the top menu bar, click on Help, and select Feedback to report the persistent delay directly to Microsoft.

Safely Clear the OneNote Application Cache
Retain Your Cache Temporarily: Do not delete the cache folder from your Desktop until you are absolutely certain that no unsynchronized notes are missing. Once confirmed, you can safely move the folder to the Trash.
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Frequently Asked Questions

Will clearing the OneNote cache delete my notebooks?

No, deleting or moving the OneNote cache does not delete your actual notebooks stored in the cloud. However, any recent notes that have not yet synchronized to OneDrive will be lost if you delete the cache without backing them up first.

How can I check if my OneNote pages are fully synchronized on macOS?

You can verify synchronization by logging into OneNote Online through your web browser. If your recent edits and notes appear there, they are safely backed up to the cloud.

Why doesn't OneNote for Mac support local notebooks?

Recent versions of OneNote for macOS and Windows focus heavily on cloud-based storage through OneDrive. Local-only notebooks are unsupported on the Mac version, which is why manual backups to formats like Word are recommended for unsynced content.

What should I do if my notes fail to sync continuously?

If you notice a cloud icon indicating incomplete synchronization, try forcing a sync by right-clicking the notebook name and selecting 'Sync This Notebook'. If it still fails, manually copy the unsynced text to a local Word document before restarting the app.