list Copyright 2026, Callback Technologies Inc. High-level information about new features, fixes, and functionality changes between minor versions releases. https://www.callback.com/ webmaster@callback.com [NEW] [Windows] Added the 'StatPendingTasks' config setting used to retrieve the number of pending tasks in the queue and the 'PendingTaskTimeout' setting to control the timeout of pending tasks..<br> June 10, 2026 [FIX] [Windows] Optimized processing of the directory watcher notifications when its queue was filled faster than it could be processed (e.g., when a large number of files or directories was created or deleted in the sync.root).<br>[FIX] [Windows] Improved speed of operations when a large number of pending items is to be synchronized to a backend.<br> March 2, 2026 [FIX] [Windows] Added workarounds for the OS bugs with reporting directory changes when directories are moved into a synchronization root.<br> January 10, 2026 [NEW] (Rust) The dynamic library is now loaded only when a trait instance is created.<br>[FIX] [macOS] Minor stability improvements.<br> September 3, 2025 [NEW] [Windows] Added the 'WindowsCreatePlaceholdersOnDemand' configuration option to enable on-demand population of large directories.<br>[NEW] [macOS] Passing of error codes from the extension to an application has been improved - now, it includes the domain and a supplementary message that macOS may specify.<br>[FIX] [Windows] An occasional AV during installation or deinstallation could occur.<br>[FIX] [macOS] Improved the mechanism used for communication between an application and an extension.<br> June 19, 2025 [NEW] Added 'WindowsUpdateIconOnRetrieveErrors' and 'WindowsUpdateIconOnUpdateErrors' configuration settings.<br>[FIX] A secondary Windows function could return 'ERROR_INVALID_DRIVE' when 'RootFolder' was set to a directory on a non-system drive. This error is now ignored so that it doesn't get in the way of registering the sync root.<br> March 4, 2025 [IMPORTANT] (Rust) Updated the API to make it more conformant to Rust rules.<br>[FIX] [Windows] A memory leak could occur in Windows in non-Unicode editions (Go, Rust, ANSI-based C++) when events were fired.<br> September 26, 2024 [NEW] Initial release of version 2024<br> July 30, 2024