Windows 10: make sure correctly owner account office

I just set for protect from my personal information old got hacked that why I got new one from old

:)

 

Remove account

I suggest you backup your personalized files first before removing the account.
To delete an account, follow these steps:

1. Press WIN + X keys and click Command Prompt (Admin) from the menu.
2. Type the following command and press Enter. Replace test with the name of your sister's account. Code:

 

Transfer Office 365 license that came with machine to new owner

In March 2019 I bought a Trekstor Surfbook that came with a 2 year license for Office 365. This license is listed in my Microsoft account as being valid until March 2021.
Now I am selling the machine and I would like to transfer the Office 365 license to the new owner.
Can someone enlighten me how to achieve this?
Thanks a lot

 

Unknown User as Owner

Hi Bree, thanks for stepping up to address this issue.
As far as I know my External Drive has only been used on my PC.

I could try to implement your suggestion and take Ownership of those Folders.
The "Take Ownership" link is present in my right click menu, but I'm currently logged in with my Microsoft account, so perhaps it would be better if I went Properties --> Security --> Advanced & set the Owner to Administrators, no?!

Although my mind is bugged with a new question now.
If I change the Owner & later on I have to restore a backup (Acronis on a CD) won't I encounter problems then?