File Corruption & Recovery

How to Fix the OneNote Shorter File Name Backup Error

Maira Mehtab Sep 24, 2026 869 views

Question details

The user is encountering a file path length error when attempting to back up notebooks in OneNote, leading to failed or incomplete backups.

Product: Microsoft OneNote
Device & OS: not provided
Scenario: Backing up OneNote notebooks to a local drive.
Observed behavior: OneNote displays a 'Please try a shorter file name' error. Even after moving the backup location to a shorter path, some notebook backups still fail or remain incomplete.

Before you start

Before making changes, verify that your local drive has sufficient storage space and identify exactly which notebook sections are triggering the sync or backup failure.

Solution 1Recommended

Shorten the Backup Root Path and Rename Notebook Sections

Move the backup destination to a root folder and reduce the character count of long notebook or section names to bypass Windows path-length limitations.

Windows has a strict maximum path length limit (usually 260 characters). When OneNote backs up files, it combines the backup folder path, the notebook name, and the section name. If this combined string exceeds the limit, the backup fails.

Moving the backup folder to the root of your C: drive helps, but if your notebook sections still have extremely long names, the error will persist. Both the destination path and the file names must be shortened.

Create a Short Backup Folder

Open File Explorer and create a new folder directly on your root drive with a very short name, for example, 'C:\ONBackup'.

Modify the OneNote Backup Location

Open OneNote, go to 'File' > 'Options' > 'Save & Backup'. Under the 'Save' section, click on 'Backup Folder', select 'Modify', and choose the newly created root folder.

Shorten Notebook Section Names

Navigate through your OneNote notebooks. Right-click any sections or section groups with long names, select 'Rename', and condense them into short keywords.

Force a Manual Backup

Return to 'File' > 'Options' > 'Save & Backup' and click 'Back Up All Notebooks Now'. Wait for the process to finish and verify that no error prompts appear.

Discard Incomplete Backups: Do not rely on any incomplete backups created during previous failed attempts. Delete them from your drive, as they may contain corrupted or missing data.

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1. Download the Installer: Visit the official WPS website and download the free installation package for your operating system.
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3. Open Your Documents: Launch WPS Office and instantly open, edit, and back up your existing Microsoft Office files without compatibility issues.

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Frequently Asked Questions

Why does OneNote show a 'shorter file name' error?

This error occurs because Windows enforces a 260-character limit on file paths. If the combined length of your backup folder path, the notebook folder name, and the specific section file name exceeds this limit, OneNote cannot successfully save the backup file.

Can I recover data from the incomplete backups?

It is not recommended. Incomplete backups usually occur because the process was forcefully halted by the system limitation, meaning crucial note data is likely missing or corrupted. You should discard them and create a fresh backup after shortening the file paths.

Will changing the backup location affect my live, syncing notebooks?

No. Modifying the backup destination only changes where OneNote stores its local, offline copies for recovery purposes. Your active notebooks will remain in their original locations (such as OneDrive or a local documents folder) and continue functioning normally.

Document & File Issues