NOD32 installation was run from the network using a config file for all machines at site. Most of the clients are Windows 9x and everything worked perfectly with these. Absolutely seamless and the config file method of installation is nothing short of a dream. However, problems arose trying to run the updater from a Windows 2000 client connecting to the mirror on an NT4.0 server (SP6a). The mirror share is completely open with no access restrictions at all. The Windows 2000 machine continually requested a username and password to connect to the mirror share on the server. I tried absolutely everything under the sun - Every combination of domain, username and password that I could think of and they all failed. No way could I get it to update. I've even tried creating a specific user with access to the mirror. I also tried mapping drives to the mirror and got exactly the same result.