EMCO Unlock It is a tool for those who often need full access on their files that are locked by some processes. As the name suggest it enables you to unlock the files that are locked by some processes in your system. Usually if some file is opened by some other process, it will be locked by that process and you won't have full access on that file. Hence you won't be able to fully manipulate those files. And as a result you might face errors like access denied when performing some actions on a locked file.