Why am I being prompted for a Product Key to install Office 365 ProPlus on a Mac?

To activate Microsoft Office ProPlus 2011 for Mac when downloading from Office 365 portal, users need to choose the "Sign in to an existing Office 365 subscription" option.

Created: Aug 26, 2014 - 9:11am Updated: Dec 11, 2017 - 5:14am Author: UIT Support Center Article: 2713
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