If you are not logged in as an administrator, you won’t be able to access most of the permissions settings.
You won’t be able to change permissions for files that are currently in use. Make sure that you close any programs currently using the file or folder that you are attempting to change permissions for.
If you don’t have a “Security” tab, you are likely trying to change the permissions for a file stored on a USB drive. If your USB drive is formatted with the FAT32 file system, you can’t set permissions for the object. The disk must be using the NTFS file system.
Click “Advanced” and then “Find Now” to find all of the users and groups on that computer. Select the user you want to add to the permissions list and click “OK. " They’ll be added to the “Group or user names” list.
Full control - User can read, write, change, or delete the file. Modify - User can read, write, and change the file. Read & execute - User can read or run the selected file. List folder contents - User can view the files in the selected folder. Read - User can open the file. Write - User can edit the file or create new files.
Click the “Advanced” button in the Security tab. Select your user and click “Change Permissions/Edit. " Uncheck “Include inheritable permissions from this object’s parent. " Save your changes. You should now be able to check the permissions boxes.
If you don’t see the Security tab, you’re likely trying to change the properties of an object on a FAT32 USB drive. Security options are only available on drives with the NTFS format. Most USB drives are FAT32 format.
Click “Advanced” and then “Find Now” to find all of the users and groups on that computer. Select the user you want to add to the permissions list and click “OK. " They’ll be added to the “Change owner to” list.