Version: 4.2.0-20058$$$(2026-08-13)$$$Compatibility & Installation$$$$$$This version requires DSM Enterprise 1.0.1-101205 and above.

Version: 4.0.3-17892$$$(2026-05-12)$$$Fixed Issues$$$Fixed multiple security vulnerabilities.

Version: 4.0.3-17892$$$(2026-05-12)$$$Fixed Issues$$$Fixed multiple security vulnerabilities.

(2026-01-22)$$$Fixed Issues$$$General$$$Fixed an issue where Synology Drive Client could unexpectedly close during file syncing if it encountered files with abnormal metadata.$$$Fixed an issue where downloading a remote folder could fail if parent folders in the local target path did not exist. Starting with this update; the system automatically creates the required directory structure.$$$Fixed an issue where removing folders from a backup task or deleting an entire backup task might fail.$$$Windows$$$Fixed an issue where the Synology Drive Client installer couldnt start properly on some computers.$$$Fixed an issue where changing only the letter case of a filename could incorrectly trigger a conflict file.$$$Fixed an issue where syncing or backing up an entire disk on Windows could fail with a folder sync error.

(2026-01-22)$$$Fixed Issues$$$General$$$Fixed an issue where Synology Drive Client could unexpectedly close during file syncing if it encountered files with abnormal metadata.$$$Fixed an issue where downloading a remote folder could fail if parent folders in the local target path did not exist. Starting with this update; the system automatically creates the required directory structure.$$$Fixed an issue where removing folders from a backup task or deleting an entire backup task might fail.$$$Windows$$$Fixed an issue where the Synology Drive Client installer couldnt start properly on some computers.$$$Fixed an issue where changing only the letter case of a filename could incorrectly trigger a conflict file.$$$Fixed an issue where syncing or backing up an entire disk on Windows could fail with a folder sync error.

Version: 4.0.0-17877$$$(2025-10-20)$$$Whats New$$$Added support for file locking to prevent conflicts from concurrent edits through manual or automatic locking.$$$Improved the sync mechanism by storing sync signature files in the sync folder; reducing local computer drive space usage.$$$Fixed Issues$$$Fixed an issue where some file changes were not detected; affecting sync accuracy.$$$Fixed an issue where files from folders deselected for sync still appeared in upload/download logs after restarting the Synology Drive Client.$$$Fixed an issue where Synology Drive Client might fail to resume downloads if the temporary file was missing.$$$Fixed an issue where users required to enable 2FA could still log in to Synology Drive Client without setting it up.$$$Fixed an issue where syncing large folders could trigger unnecessary uploads; leading to slower performance or higher resource usage.$$$Fixed an issue where files were not synced if only the modification time had changed.$$$Fixed an issue where users could continue using Synology Drive Client after their password expired.$$$Fixed an issue where generated thumbnails could be larger than the original images; causing unnecessary space usage.$$$macOS$$$Whats New$$$Added support for selecting a custom location for the macOS On-demand Sync folder shortcut; providing more flexibility in accessing synced data.$$$Fixed Issues$$$Fixed an issue where Synology Drive Client repeatedly requested folder access permissions when launched on macOS 15 or later.$$$Fixed an issue where the temp folder was not automatically cleared when the desktop utility closed; causing unnecessary space usage.

Version: 4.0.0-17877$$$(2025-10-20)$$$Whats New$$$Added support for file locking to prevent conflicts from concurrent edits through manual or automatic locking.$$$Improved the sync mechanism by storing sync signature files in the sync folder; reducing local computer drive space usage.$$$Fixed Issues$$$Fixed an issue where some file changes were not detected; affecting sync accuracy.$$$Fixed an issue where files from folders deselected for sync still appeared in upload/download logs after restarting the Synology Drive Client.$$$Fixed an issue where Synology Drive Client might fail to resume downloads if the temporary file was missing.$$$Fixed an issue where users required to enable 2FA could still log in to Synology Drive Client without setting it up.$$$Fixed an issue where syncing large folders could trigger unnecessary uploads; leading to slower performance or higher resource usage.$$$Fixed an issue where files were not synced if only the modification time had changed.$$$Fixed an issue where users could continue using Synology Drive Client after their password expired.$$$Fixed an issue where generated thumbnails could be larger than the original images; causing unnecessary space usage.$$$macOS$$$Whats New$$$Added support for selecting a custom location for the macOS On-demand Sync folder shortcut; providing more flexibility in accessing synced data.$$$Fixed Issues$$$Fixed an issue where Synology Drive Client repeatedly requested folder access permissions when launched on macOS 15 or later.$$$Fixed an issue where the temp folder was not automatically cleared when the desktop utility closed; causing unnecessary space usage.

Version: 3.5.2-16111$$$(2025-03-13)$$$Fixed Issues$$$macOS$$$Fixed an issue where the On-demand Sync task folder in Finder was not automatically removed after uninstalling Synology Drive Client.

Version: 3.5.2-16111$$$(2025-03-13)$$$Fixed Issues$$$macOS$$$Fixed an issue where the On-demand Sync task folder in Finder was not automatically removed after uninstalling Synology Drive Client.

Version: 3.5.0-16085$$$(2024-11-11)$$$Fixed Issues$$$Fixed an security vulnerability. (Synology-SA-24:21)

Version: 3.5.1-16102$$$(2024-11-05)$$$Fixed Issues$$$Fixed an security vulnerability. (Synology-SA-24:21)$$$Notes:$$$$$$This version is released in a staged rollout.

(2024-08-26)$$$Fixed Issues$$$General$$$Fixed an issue where the character : in IPv6 connection was incorrectly interpreted as a URL; leading to resolution failures.$$$Fixed an issue where file download events might continue to display every time the user restarted the client application.$$$Optimized the automatic reconnection of QuickConnect after a connection failure.$$$Windows$$$Fixed an issue where mass deployment installations might fail on Windows 64-bit versions.$$$macOS$$$Fixed an issue where an error could occur during the download process when using On-demand Sync with pinned folders.

Version: 3.5.0-16084$$$(2024-04-09)$$$Whats New$$$Windows$$$Added native support for 64-bit OS version of Windows; providing more secure and stable file synchronization.$$$Improved the stability of syncing large files in On-demand Sync tasks.$$$Fixed Issues$$$General$$$Fixed an issue where editing 0 byte files could cause file conflicts.$$$Fixed an issue where the backup status might not correctly display the transfer speed.$$$Fixed an issue where cache files were not automatically cleared after uploading thumbnails; leading to increased space usage.$$$macOS$$$Fixed an issue where subsequent operations might not be executed properly following a sync task failure.$$$Fixed an issue where long file names in the bundle file might cause upload failures.$$$Windows$$$Fixed an issue where an unexpected refresh of files occurred in File Explorer.$$$Fixed an issue where multiple file versions could prevent downloading historical versions or result in inaccurate content in those downloads.