Scripting

Why would you want to grant access for TrustedInstaller?!? CreatorOwner gets modify rights when the relevant user is granted ownership of the object. The long and short is, what pretty much everyone does is grant a local or domain group appropriate rights to the object.

Please remove the 'AutoIT' and 'WSE' tags from your post. They are irrelevant. - anonymous_9363 9 years ago

1. To take ownership I used following command:
takeown /f <Foldername> /r /d y
Result- success

2. After that tried to give permission to "Trusted installer" using following:
cacls "folder" /t /e /c /g "NT SERVICE\TrustedInstaller":F

Result- "The data is invalid." - akashrayban 9 years ago

It appears to me that because you do not know the reason for what you are trying to do, you may well have misunderstood the requirement and are trying to do something that makes no sense whatsoever. I strongly recommend that you go and find out why, as then you **might** just find that you are attempting the wrong solution. For example, under Win 7, many files are owned by TrustedInstaller. In order to be able to delete or otherwise work with these files, it is first necessary to change the ownership of the files/folders to another account, and once this is done, apply permissions for the new owner of the files/folders to those files/folders. I cannot imagine ANY scenario where you would want to apply permission to TrustedInstaller as this account is part of the operating system and you should never mess with the operating system. - EdT 9 years ago

yep. leave it alone. Why on earth would you mess with Creator Owner?? TrustedInstaller, he has all the permissions he needs with out you messing around. If you are elevating permissions. Just give Users Modify permissions. Also, if you have UAC on, you should not have to modify permissions to the location you have highlighted - Badger 9 years ago