Important Notes

• For the status of QTS updates and maintenance for your NAS model, visit https://www.qnap.com/en/product/eol.php
• To learn more about NAS models that support the TL-D800C, TL-R1200C-RP, TL-D400S, TL-D800S, TL-D1600S, TL-R400S, TL-R1200S-RP, see the Compatibility List at https://www.qnap.com/en/compatibility-expansion
• We have fixed the vulnerabilities in the following apps to ensure your data security: Surveillance Station, QVPN Service, Qfiling, Qsync Central, QcalAgent, and IFTTT Agent. To continue using these apps, go to the App Center and update them to the latest version.
• For more information on the kernel versions for NAS models that QTS 4.4.3 supports, see https://www.qnap.com/en/release-note/kernel
• Removed the following applications from App Center due to PHP 7 updates in QTS 4.4.1: "phpEasyProject", "Dolphin", "CMS Made Simple", "Vtiger CRM", "iStat", "PostgreSQL 9.3.13.3", and "ownCloud".
• Due to compatibility issues, the following applications have been removed from the App Center in QTS 4.4.1: FileFlex, MantisBT, SugarCRM, Xeams, DokuWiki, and Azure Storage.
• Once you update QTS to 4.4.1 (or later) on the TS-1635AX, you will not be able to downgrade QTS to versions earlier than 4.4.1.
• Removed support for Plex Home Theater from HybridDesk Station.
• After reaching their end of support in July 2020, Notes Station and Qnotes have been removed from QTS App Center, Google Play, and Apple App Store. We recommend using Notes Station 3 and Qnotes 3 to benefit from the next-generation note-taking features. For details on how to transfer your notes from Notes Station 2 to Notes Station 3, see the following tutorial: https://www.qnap.com/en/how-to/tutorial/article/importing-notes-from-notes-station-2-to-notes-station-3
• Due to the limitations imposed by the new system architecture, QTS 4.4.3 is the last available system update for the following NAS models: TS-531P, TS-431+, and TS-231+.

Fixed Issues

• Fixed an elevation of privilege vulnerability in Samba that could cause unauthenticated domain takeover (CVE-2020-1472).