Is there any way to sever the connection with my old Windows phone (that I gave to a family member) and my OneDrive account? I've downloaded the OneDrive app to my new phone to upload pictures, and now after they upload they are viewable on BOTH phones! I need the Windows Phone to no longer be able to access OneDrive. What about if I "remove this phone" at Windowphone.com.? Will that sever the connection? The hard reset done at AT&T when I gave the phone to a family member did not sever the connection. I even changed the password on my OneDrive account and somehow the Windows phone can still access my OneDrive account (no, I didn't update to the new password on the Windows phon). Help! All the photos I shoot on my new phone are viewable on the old Windows phone.
Since I recently given my old WP7 device to family note, just a note: While adding Microsoft account and deleting the old one sounds like correct idea, I realised you are not able to delete a Microsoft account which was the device set up with at first boot
The only way to do it, sadly, is factory reset
The solution is to remove the Microsoft Account on the Windows Phone 7 device, and switch it to a different account. Go to Settings -> Email + Accounts -> and 'Add an account'.
Have them enter THEIR Microsoft Account, not yours. After that, select your Microsoft Account and remove it.