Add personal and work or school accounts so you can store and work with files online and get to them from other devices.
Notes: If you are on Windows 10 Mobile, the file menu can be accessed from the top left corner of the screen.
Go to File > Settings, and tap Accounts.
Tap Add account.
Accounts that you’ve already added will also be listed here.
Choose which type of account you want to add, Microsoft account or Work or school account.
On the sign-in form, enter the email address and password for the account you want to add, and then tap Sign in.
When you’re signed in, you can upload or work with files for that account. You can still also save your files to your device.