Too late for me. I already purchased it from the MS Store. Now I seem to only have an option to Install.
Thank you.

>You should be able to see your current subscription, renew etc. through the Office Portal:
>
>https://portal.office.com
>
>>Exactly my concern. Thank you for the link. I am also going through the MS Store and trying to figure out what version of Office 365 I have (home or professional) to make sure I purchase the right subscription.
>>
>>
>>>If you're worried about being forced onto Windows 10 - there are ways to prevent that from happening.
>>>
>>>http://www.windowscentral.com/heres-how-stop-free-windows-10-upgrade-your-computer
>>>
>>>
>>>>If this is the only way, I will first make a good backup of the entire PC. Then will see. Too back I cannot purchase and just enter some king of key, as it is done with many other software.
>>>>Thank you.
>>>>
>>>>>I suggest you read the EULA. My *guess* is that you will agree to the changes being made.
>>>>>
>>>>>>My Office 365 is coming to end of the first year. So I need to renew the subscription. I see the button Buy in Outlook. But when I click, MS asks if it is ok to make changes to this computer. I don't trust MS as they may start upgrading OS too. Is there a way to Renew Subscription without having MS making changes to my PC?