Exchange STD 2013 key for Exchange STD 2010 install
We have an exchange std 2013 key and installed exchange std 2010 sp1, because we thought they were backwards compatiable; however the key for 2013 does not work for 2010. Were we wrong in our thinkging?
July 11th, 2013 6:10pm

Yes, you were wrong. You can't share product keys between different versions.
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July 11th, 2013 9:13pm

We were told by Microsoft that the 2013 Exchange key will cover two versions back from 2013 so 2010 should be covered. We tried installing our 2013 key however and got the same error message "Invalid Key". We did the same thing as melipoll.

Doug King

March 31st, 2015 8:43pm

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