If you mean how many machines can you install it on, the answer is it can
only be on one machine at once. If your question is how many times can you
re-install it on the same machine, there is no limit, however, if it is all
in the timeframe where you have to call MS to activate, they might start to
get suspicious.
Brian
It doesn't even have to be on the same computer. Assuming that
it's a retail copy, not an OEM one, you can even move it to
another computer, as long as you remove it from the first one.
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