How to Recover Files After a Cloud Sync Crash When Local Copies Disappear

When a sync app crashes and your local files vanish, they are often still recoverable. They may be in the service's web trash, in version history, in the Windows Recycle Bin or Mac Trash, or sitting in a folder the app moved or hid. The order of your first steps matters, because a sync client can copy a deletion to the cloud just as readily as it copies a new file. For a related guide, see Deleted File Gone? How to Recover Files from Cloud and Local Storage.

This guide covers OneDrive, Google Drive, Dropbox, and iCloud Drive. The menu names below are the common ones, but they shift slightly between app versions and account types.

First: stop the damage

Pause syncing. Use the app's tray or menu-bar icon. In OneDrive it is under Help & Settings; in Google Drive for desktop it is under the Settings gear. Dropbox has a pause option in its tray menu. This stops a half-finished sync from pushing more deletions or overwriting good copies.
Don't unlink, sign out, uninstall, or reset the app yet. Those actions can rebuild the sync folder from scratch and make the current state harder to interpret.
Stop saving new files to that drive if the files are not in any cloud or trash location (see the last section). New writes can overwrite deleted data.
Recover into a separate folder outside the sync folder, such as C:\Recovery or a folder on an external drive. Restoring straight into a synced folder can trigger another sync conflict.

Step 1: Check whether the files are really gone

Many "missing" files aren't deleted. Before restoring anything, rule out these cases:

Cloud-only placeholders. OneDrive Files On-Demand, Dropbox's online-only setting, and Google Drive's streaming mode can show files as online-only. If the app was signed out or crashed, they can look absent. Sign in on the service's website and see whether the files are there.
A different account or path. A crash can leave you signed into another account, or the app may point to a new folder (for example, OneDrive - CompanyName beside the older OneDrive folder).
Redirected Desktop, Documents, and Pictures. If OneDrive folder backup was on and then stopped, those folders may look empty. Open the OneDrive folder in File Explorer and look for Desktop, Documents, and Pictures inside it.
Conflict copies. Search for files with the device name or "conflicted copy" in the filename.

If the files show up on the website, the cloud copy is safe. Download what you need to your recovery folder, or repair the app afterward. If they aren't on the website either, move on to the trash.

Step 2: Check the cloud trash and version history

Sign in through a browser, not the desktop app. Retention depends on the service, plan, and (for work or school accounts) administrator settings, so treat these windows as typical rather than guaranteed.

OneDrive

Open the Recycle bin in the left menu on the OneDrive website. Select the files and choose Restore. Personal accounts generally keep deleted items for about 30 days. Work and school accounts often keep them longer, but this depends on the organization.
For a mass deletion or corruption, try Settings (gear) → Restore your OneDrive if your account offers it. It lets you roll the whole OneDrive back to an earlier point, usually within the last 30 days. Review the activity chart before restoring.
For a single file that was overwritten, right-click it and open Version history.

Google Drive

Open Trash in the left menu at drive.google.com, right-click the files, and choose Restore. Trashed items are normally kept for 30 days.
For an overwritten file, right-click it and choose File information → Manage versions.
On a Google Workspace work or school account, ask your administrator. They may be able to restore permanently deleted items for a limited time.

Dropbox

Open Deleted files in the left menu on dropbox.com, select the files, and choose Restore.
If your plan includes Rewind, you can roll back a folder or the whole account to an earlier time. Basic (free) accounts don't have it.
Version history retention depends on your plan, so check your plan details if the file you need is older.

iCloud Drive

On iCloud.com, open Drive → Recently Deleted and recover the items. They are usually available for about 30 days.
If the files aren't there, look for a Data Recovery option in your iCloud.com account settings, which can restore recently deleted iCloud Drive files.
On a Mac, also check the Trash. If "Optimize Mac Storage" is on, files may be cloud-only rather than deleted.

Step 3: Check local recovery sources

If the cloud has nothing, or the sync crash removed local copies that never fully uploaded, look locally:

Recycle Bin or Trash. Deleting a synced file on a computer usually sends it there. Search by name or sort by Date Deleted, then restore to your recovery folder.
Previous versions or backups. On Windows, right-click the parent folder, choose Properties → Previous Versions, and see if restore points are listed. This only works if File History or System Protection was already on. Also check Windows Backup or any external backup. On a Mac, open Time Machine and browse to the folder's earlier state.
Another device. A second computer, phone, or tablet signed into the same account may still have the files, especially if it has been offline since the crash. Disconnect it from the internet before opening the sync app, copy the files out, and only then reconnect.

Step 4: Use file recovery software as a last resort

If the files were never uploaded and aren't in any trash or backup, undelete tools are the remaining option. Success is uncertain, and it falls quickly as you keep using the drive, especially on SSDs, where deleted data is often cleared sooner.

Don't install the recovery tool on the affected drive. Use another drive or computer where possible.
Recover files to a different drive, never back to the one you are scanning.
On Windows 10 (version 2004 and later) and Windows 11, Microsoft's Windows File Recovery is a free command-line tool in the Microsoft Store. Follow Microsoft's documentation for its modes, since the correct one depends on your file system.

If the data is critical, such as irreplaceable family photos or business records, or the drive makes unusual noises or shows errors, stop and consult a professional data recovery service. Continued use can reduce what can be recovered.

Check that the recovery worked

Open several recovered files of different types, not just one, to confirm they aren't empty or corrupted.
Compare the recovered file and folder counts against what you remember, or against a backup list.
Copy the recovered set to a second location before you resume syncing.

Fix the sync app and prevent a repeat

Once your files are safe in the recovery folder, you can repair the client. Update the app, restart the computer, and make sure the drive has free space, since a full disk is a common cause of sync failures. If problems continue, use the app's official reset or reinstall process, then resume syncing. Move files back gradually and watch for errors in the app's activity view.

To avoid a repeat, keep a separate backup that isn't a sync folder, such as an external drive or a dedicated backup service. Sync copies changes, including accidental deletions, so it doesn't protect you the way a backup does.

What to do next

Pause sync, check the service's website, then its trash or version history, then your local Recycle Bin and backups. Only use recovery software if those fail. If you manage a work or school account, contact your IT administrator early, since they may have recovery options beyond what you see. If you've worked through these steps and nothing turns up, the service's official support can check account-side recovery for your plan.