Accesschk freeware checks account access of files, registry keys or services.

Download freeware to check an accounts access to file system objects, registry keys, or services.

After unzipping the file and placing Accesschk.exe in a folder that is in your path, typing accesschk /? returns:

AccessChk v2.0 - Check account access of files, registry keys or services
Copyright (C) 2006 Mark Russinovich
Sysinternals -

usage: accesschk \[-s\]\[-i|-e\]\[-r\]\[-w\]\[-n\]\[-v\]\[-d \[username\] 
   -c     Name is a Windows Service e.g. ssdpsrv (specify '*' as the
          name to show all services)
   -d     Only process directories
   -e     Only show exlicitly set Integrity Levels (Windows Vista only)
   -i     Show object Integrity Level (Windows Vista only)
   -k     Name is a Registry key e.g. hklm\software
   -n     Show only objects that have no access
   -q     Omit banner
   -r     Show only objects that have read access
   -s     Recurse
   -v     Verbose (includes Windows Vista Integrity Level)
   -w     Show only objects that have write access

If you specify a user or group name and AccessChk will report the effective
permissions for that account; otherwise it will dump the security descriptor.
By default the path name is interpreted as a file system path. For each object
AccessChk prints R if the account has read access, W for write access
and nothing if it has neither. The -v switch has AccessChk dump the
specific accesses granted to an account.

The following command reports the accesses that the Power Users account has to files and directories in \Windows\System32:

accesschk "power users" c:\windows\system32

This command shows which Windows services members of the Users group have write access to:

accesschk users -cw * 

To see what Registry keys under HKLM\CurrentUser a specific account has no access to:

accesschk -kns austin\mruss hklm\software

To see the security on the HKLM\Software key:

accesschk -k hklm\software

To see all files under \Users\Mark on Vista that have an explicit integrity level:

accesschk -e -s c:\users\mark

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