Office Performance Issues

How to Fix OneNote Synchronization Failing and High Memory Usage

Elise Williams Oct 13, 2026 871 views

Question details

The user needs to resolve an issue where OneNote crashes or consumes all computer memory while failing to synchronize large notebooks.

How to Fix OneNote Synchronization Failing and High Memory Usage

Product: Microsoft OneNote
Device & OS: not provided
Scenario: Attempting to synchronize OneNote notebooks, particularly those containing large sections or heavy PDF printouts.
Observed behavior: OneNote synchronization freezes the computer, uses all available memory, and manual sync stops partway, displaying errors 0xE0000007 and 0xE0001464.

Before you start

Before proceeding, confirm that your device has a stable internet connection and manually back up any unsynced notes by copying the text into a separate local document to prevent data loss.

Solution 1Recommended

Optimize Notebook Content and Reduce File Sizes

Reducing the size of your notebooks and handling large PDFs efficiently can prevent memory overloads and timeout errors during synchronization.

Large attachments, particularly massive PDF printouts, heavily strain OneNote's sync engine and computer memory. Optimizing these files is often the fastest way to resolve freezing issues.

Compress large PDF files

Before inserting a PDF as a printout, use a PDF compressor tool to significantly reduce its file size. Alternatively, attach the PDF as a standard file rather than rendering all pages as a visual printout.

Split large notebooks

Right-click on overly large sections in your OneNote notebook, select "Move or Copy", and divide the content into smaller, more manageable notebooks.

Delete unnecessary content

Review your notebook pages and delete old, unused content, heavy images, or large media files that are no longer required.

Optimize Notebook Content and Reduce File Sizes

Solution 2

Clear the OneNote Cache and Force Resync

A corrupted local cache can trigger repetitive sync failures and errors 0xE0000007 or 0xE0001464. Clearing it forces OneNote to rebuild the notebook from the cloud.

Solution 3

Repair Office and Update the Application

Outdated software or corrupted Office installations can cause severe memory leaks and generic synchronization errors.

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Frequently Asked Questions

What does OneNote error 0xE0000007 mean?

This error code typically indicates that OneNote is struggling to sync a specific section of your notebook. This is usually caused by network instability, excessively large file sizes, or a server timeout during the synchronization process.

How can I insert large PDFs into my notes without causing memory issues?

Instead of inserting a massive PDF as a direct printout (which renders every page as an image), compress the PDF file first. Alternatively, choose to insert the PDF as a file attachment, which requires significantly less memory to sync.

Will clearing the OneNote cache delete my notebooks?

Clearing the cache will not delete notebooks that have already successfully synced to OneDrive. However, it will permanently delete any recent changes or local notes that failed to sync, which is why manual backups of unsynced text are critical before proceeding.

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