v1.2.3810.0

• Automatic locking is implemented in the Virtual File System sample. Microsoft Office documents are now automatically locked when opened for ending and automatically unlocked when closed. The file is also automatically locked before being sent to the remote storage and unlocked when saving is completed. The lock icon is displayed in the Windows File Manager in the Status column. The UserFileSystemItem.LockAsync(), UserFileSystemItem.UnlockAsync() methods and UserFileSystemPath.Lock property is provided. 
• Excel temp files (A6TG7GPI.tmp) are now detected in the Virtual File System sample and are filtered from files being sent to remote storage.