Office Apps opening more than once
Windows 10 has a new setting which is set by default to be enabled, that allows the Office Applications to reopen after an update or a restart.
This can be disabled if required.
Instructions
Under Windows settings:
Select Accounts / Sign-in options
Scroll to the bottom of the page and under Privacy, disable the option to
"Use my sign-in information to automatically finish setting up my device and reopen my apps after an update or restart.
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