Imagine that we have an external hard disk on which a study made in 2018 was stored, and we want to recover it, but we do not have complete control.Īs soon as we try to open the folder, we will have the following alert message. Icacls is a native Windows command that runs on Windows Vista, Windows 7, Windows 8 and Windows 10. Icacls: the reset and grant functions Reset What makes it a powerful tool is also the ability to perform backup and restore operations on ACL for files or directories, or to search for files that have a specific user as owner.Īnd in addition, in the event that an ACL is damaged or destroyed, with icacls you can restore it by resetting it and setting default permissions or inheriting those of the parent. Icacls is the replacement for cacls (Change Access Control Lists), a command-line utility that allows you to show and perform some operations on ACL for files or directories.ĪCL (Access Control List) is a list of permissions for a filesystem object and defines how its security is controlled by managing who and how it can be accessed.Īctually, operations on ACL are not the only ones possible with this tool. In all these cases, Icacls command comes to help. We may also need to access a file that came from an old backup or another computer and was therefore created with a different user even then, it will not be possible to access it.
Or we may have to run a software that, for permission issue, does not work as it should. It can happen that, in some cases, we may lose sight of files or directories permissions, and when we try to access a specific file we have no result because we don’t have the rights to do so.
Windows 10 registry permissions reset how to#
In this article, we will learn how to set or reset NTFS permissions of a file or folder in a Windows operating system, with icacls command.
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