Greetings everyone, I've searched the forum as best i could and haven't been able to find an answer to my question. If i've erred in that. I apologise. I've got MS Office Pro Plus2010 installed on my PC. I removed it. Ran CCleaner afterwards to try and clear the registry. I then tried to install Ms Office Pro Plus 2013 but. NO!! According to Microsoft Toolkit, i've still got a valid key installed? Any help/direction would really be great 'm baffled as to what to do next?