Can Exchange Migrator run on the NT4 Operating System?
Exchange Migrator 1.x
Exchange Migrator 2.x
Exchange Migrator cannot run on the NT4 Operating System. Due to the API requirements, EM needs to run on a Windows 2000 machine. However, if you are migrating in an NT4 environment you can install Exchange Migrator on a Windows 2000 Member Server or a Windows 2000 Professional machine and it will run successfully.
Please see Knowledge Base article NETIQKB2202 for more information about what kind of system Exchange Migrator can be installed on.