You haven't actually told us which program you refer to but, since you've posted to the Movie Edit Pro area, I will assume it is MEP.
First, can you tell us why you cannot install from this installation file? Magix' standard procedure is to have the user download a (fairly small, Download Manager) file which then, once run, downloads the (considerably larger) files required for the installation, and then runs them. I'm not clear why this should be a problem for you or your company.
Only by emailing infoservice@magix.net are you likely to be able to obtain the full installer file, I think. You will need to explain exactly why the standard process does not work for you.