Synology NAS Drive Sync Conflict: How to Fix It

Easy 5-15 minutes Low Severity Verified June 2026
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Error Code
Drive sync conflict
Brand
Synology
Product Type
nas
Severity
Low
DIY Difficulty
Easy
Estimated Fix Time
5-15 minutes
A Synology Drive sync conflict occurs when the same file has been edited on two or more devices simultaneously, preventing automatic synchronization. This is a common issue that requires manual intervention to decide which version to keep or how to merge the changes.
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Tools You'll Need

How to Fix Error Code Drive sync conflict

  1. Identify the conflicted files

  2. Compare file versions

    Always create a backup of both versions before proceeding to avoid data loss

  3. Choose the preferred version

  4. Delete the conflict file

  5. Force sync to update all devices

  6. Verify resolution on other devices

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When to Call a Professional

Contact Synology support if conflicts persist after following these steps, if you're unable to access the Drive Client, or if you suspect database corruption in your NAS system.

Frequently Asked Questions

Why do sync conflicts happen in Synology Drive?
Sync conflicts occur when the same file is modified on multiple devices simultaneously before synchronization can complete. This prevents data loss by requiring manual review of which changes to keep.
Can I prevent sync conflicts from happening?
Yes, avoid editing the same file on multiple devices at the same time. Use Synology Office for collaborative editing, or establish a workflow where only one person edits a file at a time.
Will I lose data if I delete a conflict file?
No, as long as you've reviewed and merged any important changes into the main file before deleting the conflict version. Both versions remain available until you manually delete one.
What does the conflict filename look like?
Conflict files typically have '_conflict' followed by a timestamp or device identifier added to the original filename, such as 'document_conflict_2024-01-15.docx'.
Can I set Synology Drive to automatically resolve conflicts?
No, Synology Drive requires manual conflict resolution to prevent accidental data loss. This ensures you always have control over which version of your files to keep.

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