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User Case: QNAP Cloud Drive Sync Not Working


QNAP Cloud Drive Sync not responding

I am using the QNAP to store VMs (as backups and perhaps 'live') as well as Data that I have in Dropbox. The Cloud Sync and Dropbox have been working fine and I have been impressed with the overall speed of the NAS.  I recently noticed that something in Dropbox had not synced with the data on my local drive.  When checking Cloud Drive Sync I found it not responding. I welcome your suggestions to resolve this issue as well as other cloud backup options. --- from https://community.spiceworks.com/


QNAP Cloud Drive Sync not available

Hi there, I have a few folders on my QNAP that sync with a Dropbox folder with the same name. Most of the time this works well. But once in a while, I see that the Dropbox folder doesn't exactly correspond with the original folder on the QNAP. I have a two-way sync job enabled with real-time synchronization. This is pretty annoying because one should be able to 100% trust synchronization. Any suggestions? Thx! --- from https://community.spiceworks.com/


Understanding QNAP Cloud Drive Sync

Before we delve into troubleshooting, it's essential to understand what QNAP Cloud Drive Sync is. QNAP Cloud Drive Sync is a feature that enables seamless file synchronization between your QNAP NAS (Network-Attached Storage) and other connected devices such as computers, smartphones, and tablets. This functionality is particularly useful for maintaining the consistency of your data across all your devices.

Reasons for "QNAP Cloud Drive Sync Not Working"

Despite its benefits, users may encounter various issues with QNAP Cloud Drive Sync. These issues can be frustrating, but with the right approach, they are usually solvable. Here are some common problems:

1. Sync Failure: Sometimes, users may experience issues with syncing, resulting in data not being updated across devices.

2. Slow Sync Speed: Slow synchronization can hinder productivity, and understanding the reasons behind it is crucial.

3. Sync Conflicts: Conflicts may arise when the same file is edited on different devices, and resolving these conflicts can be a challenge.

4. Limited Storage Space: Users may run out of storage space on their QNAP NAS, affecting their ability to sync files.

5. Network Connection: In some cases, a faulty network connection can disrupt the synchronization process.

6. Outdated QTS Version: Ensure that your QNAP NAS is running the latest QTS (QNAP Turbo System) version. An outdated version may lead to compatibility issues.

7. QNAP Cloud Service Status: Occasionally, the QNAP cloud service may experience downtime or maintenance, causing the sync to be temporarily unavailable.

8. Client Software Issues: Problems with the Qsync client software on your computer can also be a root cause of the issue.

Troubleshooting Steps for "QNAP Cloud Drive Sync Not Working"

To resolve the "QNAP Cloud Drive Sync not working" issue, follow these steps:

1. Reconfiguring Sync Settings

Review and adjust your sync settings to ensure they match your requirements. Sometimes, improper settings can lead to syncing problems.

2. Dealing with Sync Conflicts

If you encounter sync conflicts, follow the prompts to choose the correct version of the file. Make sure to resolve these conflicts to enable smooth synchronization.

3. Examining Storage Space

If you're running low on storage space, consider freeing up space or expanding your storage capacity. Running out of space can impede syncing.

4. Checking Network Connectivity

Ensure that your devices are properly connected to the internet and that there are no network issues. A stable internet connection is essential for smooth synchronization.

5. Verifying QTS and App Versions

Check if your QNAP NAS is running the latest version of QTS (QNAP's operating system) and that the QNAP Cloud Drive Sync app is up to date. Outdated software can lead to compatibility issues.

6. Examining QNAP Cloud Service Status

Visit the QNAP website or their official support channels to check the status of their cloud service. If it's undergoing maintenance, you may need to wait until it's back online.

7. Reinstalling the Qsync Client

If the issue persists, try reinstalling the Qsync client software on your computer. This can resolve client-related problems.

8. Try Alternative Solutions

If troubleshooting doesn't resolve your issues, consider alternative cloud sync and storage solutions, such as MultCloud.  MultCloud is a cloud sync, backup and transfer tool that can help automatically and quickly move data between cloud accounts or file servers.

  • Perfect Integration: Manage up to 30+ cloud drives centrally.
  • Random Migration: Do one-time or incremental migration according to your own needs.
  • Real-time Sync: Provide 10 custom sync modes to simplify collaboration.
  • Smart Backup: Backup and restore important data to cloud accounts at any time.
  • Email Migration: Easily save emails to a flash drive or cloud account.
  • Remote Upload: Directly download URLs, torrent files or magnet links to clouds.


QNAP Cloud Drive Sync is a valuable tool for maintaining data consistency across devices. However, it's not uncommon to encounter issues that hinder its functionality. By following the troubleshooting steps and optimizing your settings, you can resolve most problems related to "QNAP Cloud Drive sync not working" and enjoy seamless synchronization.


1. Why is QNAP Cloud Drive Sync slow?

Slow synchronization can be due to various factors, such as network issues, outdated software, or insufficient bandwidth. By addressing these issues, you can improve sync speed.

2. How can I resolve sync conflicts in QNAP Cloud Drive Sync?

When sync conflicts occur, carefully review the conflicting versions and choose the correct one. This helps in resolving conflicts.

3. What should I do if I run out of storage space on my QNAP NAS?

You can free up space by deleting unnecessary files or consider expanding your storage capacity by adding more drives or using cloud storage solutions.

4. How can I resolve QNAP Cloud Drive Sync missing?

You can resolve this issue by checking for software updates, verifying network connectivity, reviewing account settings, adjusting sync task configuration, restarting the application, reinstalling it, or contacting QNAP support.

5. Is there a cloud service to backup QNAP?

There are several reliable options available, such as Dropbox, Google Drive, and OneDrive. You can use QNAP built-in feature to backup your QNAP data to those cloud accounts, or use MultCoud to backup QNAP to pCloud, Wasabi, Amazon S3, and so on.

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