Article: Q131780
Product(s): Microsoft Windows NT
Version(s):
Operating System(s):
Keyword(s):
Last Modified: 08-AUG-2001
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The information in this article applies to:
- Microsoft Windows NT Workstation versions 3.5, 3.51
- Microsoft Windows NT Server versions 3.5, 3.51
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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.
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