Some more basics:
WIndows 10 64
Opera version 49.0.2725.47
The problem is that when trying to open a wordfile in my dropbox I get the following message;
"word-view.officeapps.live.com har blockerats
Förfrågningar till servern har blockerats av ett tillägg.
Testa att inaktivera tilläggen."
When using Microsoft Edge or Chrome there is no problem, it works as it should, but not in Opera!!