I am having no success applying the SP3 rollup to our Exchange 2K server. When I try I get a message that informs me that my Exchange 2K server needs to be at SP3 or higher. Since SP3 is already installed and yes I have checked can I reinstall SP3 to be sure that it has been applied correctly? I know that once installed SP3 can not be removed, but can it be reapplied?
