By Jonna twitter/ Last Updated January 13, 2023

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  • Are you afraid of accidentally losing the data stored on your hard drive?
  • Are you anxious that there is not enough space locally for backup?
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  • Backup all your data to the cloud offsite, never lose data and recover them from any PC.

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Why are some of my OneDrive files not syncing?

Even though OneDrive is known as one of the most reliable cloud storage services in the world, there can be some issues with it that prevent files from keeping in sync. Some common problems are: OneDrive Documents not syncing, OneDrive camera roll not syncing, OneDrive videos not uploading, etc. Today, we are mainly talking about why is OneDrive not syncing large files and how to fix it.

OneDrive Not Syncing Large Files

The reasons for this problem could be at your end or your internet service provider’s or maybe at OneDrives's end as well. The most common causes are:

  • OneDrive sync paused or stopped due to server disconnection.
  • File upload was interrupted due to a poor network connection.
  • Insufficient OneDrive storage space.
  • File size exceeds the OneDrive upload limit.
  • File name is not supported on OneDrive.

Is there a file size limit for OneDrive?

When uploading videos, folders, and other large files to OneDrive fails, you may wonder about its file size limit. In fact, Microsoft has increased the previous OneDrive file upload limit from 100GB to 250GB (for every OneDrive plan).

Note, however, that if you are a free OneDrive user, your OneDrive size limit remains at 5GB.

How to fix OneDrive Not Syncing Large Files

Here are things you can do to solve “OneDrive does not sync large files” on Windows 10 and Windows 11.

Method 1. Check OneDrive compatibility with your operating system

The first thing you need to do is to check if the Windows operating system you are using is compatible with OneDrive. If you are using an outdated operating system and a new version of OneDrive, your files will not sync regardless of their size, and OneDrive may keep crashing.

The easiest way to fix OneDrive not syncing Windows 10/Windows 11 for large files to make sure you update your operating system along with installing the latest version of OneDrive.

Step 1. Open Windows Settings and click on Update & Security.

Step 2. Choose Windows Update, and click Check for updates to see if there are any newer updates.

Windows Update

Method 2. Make sure you have a stable Internet connection

Usually, an unstable internet connection is the main reason why large files cannot be uploaded to OneDrive properly, as they require a fast and reliable Internet connection.

You can start troubleshooting your network connection by restarting your router. If you're using a wireless network connection, make sure your device is close to the router.

Method 3. Relaunch OneDrive

After making sure your problem is not from the network, you can try restarting OneDrive to let your unsynced files re-upload to solve OneDrive not uploading files.

Step 1. Press and hold Ctrl, Shift, and Esc keys simultaneously on your keyboard to open Task Manager.

Step 2. Right-click Microsoft OneDrive on the Process page, and tap End Task.

End OneDrive Task

Step 3. Then, search for OneDrive in the Windows search box, and run it to sync files again.

Method 4. Check file names

According to OneDrive's file upload requirements, individual file and folder name paths must not exceed 255 characters.

In addition, file names are not allowed to contain ", *, :, <, >, ?, /, \, |, and other special characters, lead and trailing spaces, etc. So you need to access your failed upload files and change the file names.

Method 5. Check your storage space

If you want to let OneDrive sync large files, you need to ensure that both the local storage and the cloud storage have enough space, otherwise the files cannot be uploaded successfully.

You can check the OneDrive storage on the OneDrive Manage Storage page. If you are reaching your storage limit, please empty recycle bin and remove useless files to free up OneDrive space and fix OneDroive not syncing videos and other large files.

OneDrive Manage Storage

Method 6. Reset OneDrive

Many people say that resetting OneDrive is a great way to fix OneDrive not syncing certain files.

Press Windows + R keys to access the Run dialog. Then, input %localappdata%\Microsoft\OneDrive\onedrive.exe /reset in the edit box, and click OK. After that, you could run OneDrive and set it up again to sync target files.

Reset OneDrive

How do I sync large files to OneDrive quickly?

If the “OneDrive not syncing large files” issue persists after trying the above solutions, you can try a third-party file sync tool to upload large files to OneDrive error-free. CBackup is an excellent option for Windows users. It will help you upload large files to OneDrive without file size limitations.

Also, it allows you to automatically sync files to OneDrive on a regular basis using its Scheduled Sync feature daily, weekly, and monthly. Please download CBackup on your computer, and sync large files to OneDrive effortlessly now.

Download CBackupWin 11/10/8.1/8/7/XP
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Step 1. Create a free account for CBackup. Launch the CBackup desktop app and log in.

Step 2. Click Storage, choose OneDrive, and click Authorize Now to sign in to your OneDrive account and allow CBackup to access your OneDrive files.

Select OneDrive

Step 3. Tap Sync to select Sync PC to Public Cloud.

Choose PC to Public Cloud

Step 4. Choose large files and folders you prefer to sync, and specify the added OneDrive cloud as a destination. Then, hit Start Sync to begin the sync process.

Sync Files to OneDrive

✌More powerful features on CBackup: 
» Sync files to Google Drive, Dropbox, and multiple clouds.
» Manage multiple cloud storage accounts for OneDrive, Google Drive, and Dropbox on a single interface with one login.
» Backup files to CBackup Cloud (10GB of free space), Google Drive, OneDrive, Dropbox, and multiple clouds.
» Backup/sync OneDrive to Google Drive, Dropbox, and other clouds seamlessly.
» Exclude certain files from syncing to cloud with file extensions easily.


If you are experiencing OneDrive not syncing large files on Windows 11/10, you can fix it using the above methods.

Alternatively, you can turn directly to CBackup to effortlessly sync large files to OneDrive. It allows you to upload files to OneDrive, Google Drive, and other cloud drives without any restrictions, saving you time to deal with OneDrive syncing problems.

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