Before traveling to the Isle of Mists you get a warning specifying that some quest may fail if you go past this point. The first time I was about to cross this point I double checked that I had completed all the quests listed on the Wiki. After crossing I got a quest failed notification for Berengar's Blade (I had already discovered the quest before crossing). I loaded up an old save and completed the Berengar's Blade quest, and crossed again. I haven't gotten any quest failed notifications after crossing but I did get the warning again. I'm concerned that I might be missing some secondary that isn't listed on the Wiki since I might not get a quest failed notification if I haven't discovered the quest in the first place.
So my question is do you always get that warning or will it only be present if you are going to miss something?
Best Answer
I have always received this warning on every play through I have done even though I have completed all the secondary quests. So I think you always get it.
The quests that can fail all involve the main characters. Things like Witcher Contracts and Treasure Hunts are OK.