Notification Center displays “An unknown error occurred due to an invalid operation or lack of required information.”
Last modified date:
2025-08-07
Applicable Products
This issue is known to occur in the following versions:
- Notification Center v2.1.0.3389
- Notification Center v1.9.2.3139
Solution
- Do not uninstall the current version of Notification Center.
- Based on your NAS model, please visit the following link to manually download and reinstall the previous version of Notification Center: https://www.qnap.com/en/app-center?os=qts&version=5.2.1~5.2.6&kw=notification
- For installation instructions, please refer to: How to install QNAP applications (.qpkg files) manually?
- For further assistance, please contact QNAP Technical Support or submit a ticket via Helpdesk.
