1. I see that client task instance returns this information after your command line execution
C:\Windows\system32>cacls “C:\Program Files\.......” /t /c /e /g Everyone:c
NOTE: Cacls is now deprecated, please use Icacls.
Displays or modifies access control lists (ACLs) of files
CACLS filename [/T] [/M] [/L] [/S[:SDDL]] [/E] [/C] [/G user:perm]
[/R user [...]] [/P user:perm [...]] [/D user [...]]
filename Displays ACLs.
/T Changes ACLs of specified files in
the current directory and all subdirectories.
/L Work on the Symbolic Link itself versus the target
/M Changes ACLs of volumes mounted to a directory
/S Displays the SDDL string for the DACL.
/S:SDDL Replaces the ACLs with those specified in the SDDL string
(not valid with /E, /G, /R, /P, or /D).
/E Edit ACL instead of replacing it.
/C Continue on access denied errors.
/G user:perm Grant specified user access rights.
Perm can be: R Read
W Write
C Change (write)
F Full control
/R user Revoke specified user's access rights (only valid with /E).
/P user:perm Replace specified user's access rights.
Perm can be: N None
R Read
W Write
C Change (write)
F Full control
/D user Deny specified user access.
Wildcards can be used to specify more than one file in a command.
You can specify more than one user in a command.
Abbreviations:
CI - Container Inherit.
The ACE will be inherited by directories.
OI - Object Inherit.
The ACE will be inherited by files.
IO - Inherit Only.
The ACE does not apply to the current file/directory.
ID - Inherited.
The ACE was inherited from the parent directory's ACL.
Seems like you have to use Icacls instead of cacls.
If you want to see what command line outpout returns after task execution, then click on "Advanced" button in your task and set "Save script output with task status"
2. Here is an article about return code after task execution on system