v3.3.9488.0

• Thumbnails did not work if Virtual Drive sample deployed as a package. Surrogate COM handler is broken in latest Windows updates. Thumbnails handler now refactored to run as a COM exe server.

v3.2.8936.0

• Some applications, such as Notpad++, remove the Offline attribute when saving a document, converting a placeholder to a regular file. In Virtual Drive sample the Attributes filter is added to the MsOfficeDocsMonitor class to monitor Changed event and convert the file back to the placeholder.
• If exception occurred during sample start-up the exception did not log. Now all exceptions that occurred during app start-up are logged.

v3.2.8901.0

• msix packaging is now supported. The packaging project is added to the Virtual Dive sample.
• The thumbnails provider in the Virtual Drive sample now runs as a surrogate COM and can be installed/removed without admin privileges as part of the packaged installation. The thumbnails handler can now be debugged running the project directly from Visual Studio.
• Virtual File System sample refactored. The file/folder ID is now used to link user file system file with remote storage. Mapping.MapPath() function is removed from the sample project.
• targetParentItemId parameter, representing a new parent folder ID, added to IFileSystemItem.MoveToAsync() method.
• Item ID is now returned by the IFolder.CreateFileAsync() and IFolder.CreateFolderAsync() methods.
• Placeholder creation performance improved.
• Selecting "Always keep on this devise" on a folder that was never enumerated does not load file content. Now, this bug is fixed.
  Virtual File System for macOS sample refactored.

v3.1.7115.0-Beta

• Item ID support provided. The IEngine.GetFileSystemItemAsync() method now has an itemId parameter. IFileSystemItemMetadata.ItemId property added. PlaceholderItem.GetItemId() method added. The IFolder.CreateFileAsync() and IFolder.CreateFolderAsync() methods now return item ID.
• PlaceholderItem.SetItemInfo() method renamed to PlaceholderItem.SetMetadata().
• The CustomDataManager calss in sample code renamed to ExternalDataManager to avoid confusion with IFileSystemItemMetadata.CustomData/PlaceholderItem.GetCustomData().

v3.0.7021.0-Beta

• Thumbnails implementation is provided in the Virtual Drive sample. The Virtual Drive can now read thumbnails from the remote storage and display them in Windows Explorer in thumbnail mode.
• FileSystemItemMetadata.CustomData property getter returned incorrect data. Now, this bug is fixed.

v3.0.6973.0-Beta

• Virtual File System sample for macOS now supports all file management functionality: remote storage to user file system sync, user file system to remote storage sync, files creation, hydration/dehydration,  deletion, copy, move, etc.
• Virtual File System sample for Windows refactored and simplified to provide only minimum code required to create a file system with synchronization, on-demand loading, hydration/dehydration.
• Virtual Drive sample is provided with advanced functionality: Microsoft Office files editing, automatic Microsoft Office documents locking, custom columns/states in Windows File Manger.
• Virtual File System sample performance improved. The sample folder listing is tested with up to 35K files in a single folder. File hydration is tested up to 30GB per file.
• New locking interfaces are provided. ILock interface is provided in ITHit.FileSystem.Windows module. EngineWindows.AutoLock property is provided to enable automatic Microsoft Office documents locking.
• IEngine.FilterAsync() method is provided to avoid synchronization of specified files (typically Microsoft Office temp files) to the remote storage and back.
• Rename and delete operations can now automatically confirm the operation if no exception is thrown inside the method implementation or reject operation in case of exception.
• The IEngine.GetFileSystemItemAsync() method now provides FileSystemItemType parameter, indicating if a file or a folder is requested.
• EngineWindows class now processes hydration/dehydration as well as files and folder creation. No need to create a separate file system monitoring thread.
• PlaceholderItem class now provides HydrationRequired() and DehydrationRequired() methods.
• EngineWindows now provides the public StopAsync() method.
• IFile & IFolder now provides WriteAsync() method.
• IFolder now provides CreateFileAsync() and CreateFolderAsync() methods.
• IFile.TransferDataAsync() method is replaced by IFile.ReadAsync() with a stream parameter.
• IClientNotifications and IClientNotificationsWindows interfaces as well as EngineWindows.ClientNotifications() method is provided. To be called if the file system was not running to process operations and sent to remote storage.
• IServerNotifications interface and IEngine.ServerNotifications() method is provided for notifying the user file system about changes in the remote storage.
• If custom data is not specified in FileSystemItemMetadata.CustomData when creating a placeholder, the Win32Exception is thrown "Cloud Operation is invalid". Now, this bug is fixed.
• Custom columns data was erased when setting the file icon. Now custom data is stored in the external file in the data folder, separately for each file. Custom columns implementation is moved to a new Virtual Drive sample.
• Files and folders are now only marked as modified when file content is modified or the folder is moved. The StorageProviderSyncRootInfo.InSyncPolicy is now set to StorageProviderInSyncPolicy.Default in Registrar class in samples.
• New files are now converted to a placeholder only after successful file upload in the sample code.
• File comparison changed in Virtual Drive and User File System samples. Instead of ETag-LastModifiedDate now file hashes are computed.

v2.5.5091.0

• Virtual File System Sample for Mac Alpha sample now supports download and upload the file content as well as move/rename and delete for files and folders. 
• Incorrect references in sample projects for Windows to ITHit.FileSystem.dll and ITHit.FileSystem.Windows.dll. Now references are properly set to the NuGet repository.
• Samples solution for Windows does not include the ITHit.FileSystem.Samples.Common.Windows project. Now this project is included in samples solution.
• The Virtual File System sample for Windows included the unused source files in the "\Framework\" folder. Now, this folder is deleted.
• The Virtual File System sample for Windows contained the "License" configuration property in the appsettings.json file instead of the "UserFileSystemLicense". Now, this bug is fixed.

v2.5.5083.0

• File hydration time significantly improved.
• Files of unlimited size are now supported.
• IVirtualLock interface is provided. Now this interface can be optionally implemented on files and folders that require locking support. 
• IFileSystemItem.DeleteCompletionAsync() and IFileSystemItem.MoveToCompletionAsync() methods are provided, called when the delete or move operation is completed by the platform.
• Locking management code is refactored in samples.
• ETag management code is refactored in samples.
• ETag file did not delete after folder deletion, now this bug is fixed.
• Sample move code refactored in samples.
• "*User*" interfaces renamed to "*Virtual*" interfaces in sample code. "*BasicInfo" classes and interfaces renamed to "*Metadata".
• The installer project is provided for the WebDAVDrive sample. 
• File content validation is disabled by default in samples.
• Folders with incorrect creation/modification/access date-time are created in remote storage. Now, this bug is fixed.
• MS Office documents did not unlock after editing. This bug is now fixed.
• Conflict error in Virtual File System sample. "ETags a not equal" after the file is saved a second time. This bug is now fixed.

v2.0.4465.0

• ITHit.FileSystem.Mac module with User File System Engine for macOS implementation is provided.
• Virtual File System sample Alpha for macOS is provided in Xamarin. The sample implements on-demand folders listing as well as demonstrates virtual drive installation and uninstall. The sample also provides macOS status bar application (container app).

v1.4.4298.0

• Challenge-response authentication (Basic, Digest, NTLM/Kerberos) is now supported in WebDAV Drive sample. The login form is provided. The credentials are securely stored in Windows Credential Manager.
• Web browser login form does not work in WebDAV Drive sample. If server replies with 302 redirect the request failed and the login form does not show. This bug is now fixed.
• WebDAV Drive sample is now using WPF for UI rendering.