Using the /E Option With CACLS.EXE (131780)



The information in this article applies to:

  • Microsoft Windows NT Workstation 3.5
  • Microsoft Windows NT Workstation 3.51
  • Microsoft Windows NT Server 3.5
  • Microsoft Windows NT Server 3.51

This article was previously published under Q131780
To change user permissions on a Windows NT file system (NTFS) directory or file, you must use the /E option in addition to /R (revoke), /G (grant), and /P (change) when using CACLS.EXE. If you already have permissions set for multiple users on a directory or file and do not use the /E option, all user permissions are removed except for the user and permission specified on the command line.

The following syntax should be used when modifying user permissions:

CACLS <filename or directory> /E /R <username>
CACLS <filename or directory> /E /G <username>:<permission>
CACLS <filename or directory> /E /P <username>:<permission>


where <permission> is R (Read), C (Change - write), or F (Full control).

Type the following at the command line for information on other options:

CACLS /?


NOTE: The /E option modifies the directory or file ACL instead of replacing the ACL with new users and permissions.

Modification Type:MajorLast Reviewed:12/16/2003
Keywords:KB131780