M/S secúrity client instalation wizard cant find files that are necessary to complete the instalation i have this message on screen, also i cant remove M/S security estionals from the computer in the add and remove program section of computer and when i do updates it tells me i have all updates

Hi, I take if from your post that you wish to uninstall Microsoft Security Essentials and install Forefront in its place. Is that correct? To do so you will need to uninstall MSE. If you cannot uninstall using the automated method you can use the advice from this link for any version before version 2: http://support.microsoft.com/kb/2435760 . Having uninstalled MSE you can proceed to installl Forefront. I would recommend downloading the installation pack afresh if you are missing files. I would also check that you don't need to install additional software or updates in order to facilitate installation. If so install all of these before you try to install. The system requirements can be found at this link: http://technet.microsoft.com/en-us/library/bb404245.aspx CathalCathal O'Brien BSc, PgDip, PhD . Techsmart Computer Repair