I installed Office 2010 professional plus on Win7 home premium. I purchased it via MS Home Use Program. I downloaded and installed Office 2010 without any problem and I entered the product key once. But recently it has started asking me for the product key every time I restart my PC. Most recently when I entered the key, it gave me error and said rolling back changes. And the nit kicked me out of the program. Why is this problem happening?
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