Set the file permissions and ownership to iexplore.exe to not allow that user to read said file.
I want to disable access to the internet for a user account on a computer. Computer has an account for 1 user and there is another account on this computer that is used occasionally to look at files on a network server. The second account I would like to prevent from Internet access. The network is not set up under a domain. It is a small network set up as a workgroup.