What is the version of PowerPoint you are using?
> Is the PowerPoint serial number different from the original Microsoft serial number?
<< Please tell me what does “original Microsoft serial number” mean.
Generally, if you use newer version of Office like Microsoft 365, Office 2019, retail version of Office 2016(like Office Professional 2016), or retail version of Office 2013(like Office Professional 2013), generally, we need to redeem a new purchase firstly with product key.
You could refer to “Using product keys with Office”, it may be helpful to you.
Besides, is there any error message?
If yes, please give a screenshot.
If you have any updates, please post back.
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