Processes in Microsoft 365 for setting up Office apps, redeeming product keys, and activating licenses.
Hi Hoon
Office 365 is a subscription product, either charged monthly or yearly
If you have signed up to a subscription to Office 365, that will be charged to your Account, do you no longer want to subscribe to Office 365?
If so:
Go tohttps://account.microsoft.com/services and enter your login details
Go to the Services & subscriptions section and locate your subscription
Click on Manage - Cancel
Select Confirm cancellation and follow the steps . . .