OneDrive File Issues

Fix OneDrive High CPU Usage and 'Looking for Changes' Error

Maira Mehtab Sep 22, 2026 870 views

Question details

The user needs to resolve an issue where OneDrive is stuck on 'Looking for changes,' causing high CPU usage and attempting to sync an abnormally large number of files.

Product: Microsoft OneDrive
Device & OS: not provided
Scenario: Synchronizing a massive volume of local files or folders generated by software that constantly change.
Observed behavior: OneDrive remains in a continuous 'Looking for changes' state, failing to complete synchronization while consuming excessive CPU resources.

Before you start

Before troubleshooting, pause OneDrive syncing for a few minutes and then resume it to see if the engine clears the backlog, and ensure you have administrative privileges to manage local folder paths.

Solution 1Recommended

Reduce the Number of Locally Synced Files

The most effective way to resolve high CPU usage is to minimize the total number of files OneDrive has to scan and sync.

Review folder contents

Open the local OneDrive folder via File Explorer and identify folders that contain a massive number of files or cache data.

Identify generated files

Look for software-generated files, temporary data, or build folders that change frequently and trigger continuous syncing.

Move folders outside OneDrive

Move these heavy or rapidly changing folders outside of the OneDrive directory to a local-only path on your main drive.

Avoid Workarounds: Do not use file renaming workarounds that intentionally trigger synchronization errors, as this can corrupt your sync state.

Solution 2

Disable PC Folder Backup for Unnecessary Folders

Prevent OneDrive from automatically scanning and syncing large standard Windows folders if they contain too many non-essential files.

Solution 3

Exclude Specific File Types Using Registry Policies

For advanced users, Group Policy can be used to prevent certain file types or names from uploading, reducing the sync burden.

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Frequently Asked Questions

Why is OneDrive constantly 'Looking for changes'?

This typically occurs when there is a massive number of files in your OneDrive directory, or if local software continuously modifies cache files, forcing the sync engine to constantly scan for updates.

Can I exclude a specific subfolder from syncing in OneDrive?

By default, OneDrive synchronizes all content within selected folders and does not allow you to reliably exclude individual folder paths. The best workaround is to move the folder completely outside the OneDrive directory.

How do I check which folders contain the most files in OneDrive?

You can manually right-click folders in File Explorer and select 'Properties' to view the total file count, or use Windows PowerShell to recursively count the files in your local OneDrive directory.

Will intentionally renaming folders fix the OneDrive sync issue?

No. Using unsupported workarounds that intentionally trigger synchronization errors can corrupt your sync state and prevent important files from being backed up.

Document & File Issues