How to fix ERROR_CLOUD_FILE_VALIDATION_FAILED (383)
Description
The cloud sync provider failed to validate the downloaded data. This error means Windows received data from the cloud provider (such as OneDrive), but the data failed integrity or checksum validation — indicating the downloaded content may be corrupted or incomplete.
Causes
- A file was only partially downloaded from OneDrive and the local placeholder doesn't match the expected data.
- Network interruption during a file hydration (download) attempt corrupted the local cache.
- The OneDrive local cache or metadata is out of sync with the server copy.
- Antivirus software scanned and modified a file mid-download, causing a checksum mismatch.
- Corrupted OneDrive sync database on the local device.
Solutions
Force a Fresh Download
Right-click the affected file in File Explorer and choose Free up space, then right-click again and select Always keep on this device to trigger a clean re-download from OneDrive.
Reset OneDrive
Press Win + R and run:
%localappdata%\Microsoft\OneDrive\onedrive.exe /reset
This clears the local sync state and forces OneDrive to rebuild its database from the server.
Unlink and Re-link Your Account
- Click the OneDrive icon in the taskbar.
- Go to Help & Settings > Settings > Account.
- Select Unlink this PC, then sign back in to force a full re-sync.
Check Antivirus Exclusions
Add your OneDrive folder to your antivirus exclusion list to prevent real-time scanning from interfering with file downloads. Consult your antivirus software's documentation for how to add exclusions.
Download the File from the Web
Open OneDrive.com in a browser, locate the file, and download it manually. This bypasses the sync mechanism entirely and gets you a clean copy.
Install Windows Updates
Go to Settings > Windows Update and install all available updates, as some patches address cloud file validation issues in the Files On-Demand subsystem.