QNAP NAS Error Code Cloud Account Credential Invalid: How to Fix It

Easy 5-10 minutes Low Severity Verified June 2026
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Error Code
Cloud account credential invalid
Brand
QNAP
Product Type
nas
Severity
Low
DIY Difficulty
Easy
Estimated Fix Time
5-10 minutes
The QNAP cloud account credential invalid error occurs when your NAS can no longer access cloud storage services like Google Drive, Dropbox, or OneDrive through the HBS3 backup application. This typically happens when authentication tokens expire or are revoked, requiring you to re-authorize your cloud storage accounts.
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Tools You'll Need

How to Fix Error Code Cloud account credential invalid

  1. Access QNAP Web Interface

  2. Open HBS3 Application

  3. Navigate to Cloud Storage Settings

  4. Remove Existing Cloud Account

  5. Re-Add Cloud Storage Account

  6. Complete OAuth Authorization

    Ensure you're logged into the correct cloud storage account before authorizing access

  7. Verify Connection and Test

  8. Update Existing Backup Jobs

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When to Call a Professional

Contact QNAP support if you continue experiencing credential errors after re-authorization, if you cannot access the HBS3 application, or if you're unable to complete the OAuth authorization process due to network or firewall restrictions.

Frequently Asked Questions

Why do QNAP cloud credentials become invalid?
Cloud credentials become invalid due to token expiration (typically every 90 days), password changes on your cloud account, revoked app permissions, or security policy changes by the cloud provider.
Will I lose my backup data when re-authorizing cloud credentials?
No, re-authorizing credentials does not delete your existing backup data in the cloud. Your files remain safe in your cloud storage account, and you'll regain access once credentials are updated.
How often do I need to re-authorize QNAP cloud storage?
Most cloud providers require re-authorization every 3-6 months for security reasons. Some providers like Google Drive may require more frequent re-authorization depending on your account settings.
Can I prevent QNAP cloud credential errors from happening?
While you can't completely prevent credential expiration, you can minimize issues by enabling email notifications in HBS3 for backup failures, regularly checking backup job status, and avoiding changes to your cloud account passwords without updating QNAP.
What should I do if OAuth authorization keeps failing?
If OAuth authorization fails repeatedly, check your internet connection, disable browser ad blockers, clear browser cache and cookies, ensure popup blockers aren't interfering, or try using a different web browser for the authorization process.

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