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Old 10-10-2021, 01:37 PM
chzuck chzuck is offline Windows 10 Office 2010
Join Date: Sep 2019
Posts: 3
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Default This copy of MS Office not activated

A few years back I bought MS Office Professional Plus 2010 that came on a USB for two computers. I installed it on two computers and everything was working fine. Just last week I went to use Word on my one laptop and it said "This copy of Microsoft Office is not activated" I see error Code: 0x80070078 at the bottom of the popup window. Why did this change and how do I fix it?
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