I have two pc's A and B with fully updated Windows 10 and MSOffice 365 home installed.


I have checked ALL settings in the Security Center on both and they are exactly the same settings in Word and Excel !


When I create an Excel or Word file on B, store it on my NAS-drive , close it and re-opens it, it starts with that yellow bar and I have to allow editing !


From the pc A I can open it and NO BAR is shown - I see NO difference in the settings on the two machines A and B !


I have tried neatly ALL recommendations I can find on the internet !


What is wrong and what can I do to solve this problem ?