I've played quite a few campaign missions but none of them allow me to build the buildings for upgraded troops, even after having built everything else possible in a city or town. For example, I can get sentinels and crossbowmen, but the option to build the building which would enable me to get praetorians or marksmen never shows up! It's happening for all races.
Why can’t I upgrade the units in Heroes VI
might-and-magic-heroes-6
Related Solutions
Oops, I just figured it out by going nuts on the dialog box.
Just hit Cancel 20 or 30 times - eventually it'll go away and the demo will start. Seems like a bad sign, but we'll see.
There are preset heroes, but only if you play Heroes VI offline. When you aren't connected to the Conflux, you can choose from a list that contains a single Might and a single Magic hero from each faction.
When you are connected to the Conflux, you are restricted to your dynasty heroes and the factions they represent. However, as you finish the campaigns, you gain the heroes from those campaigns. I'm guessing (hoping?) that once you have finished all the campaigns you will have a might and a magic hero from every faction in your dynasty.
If I'm wrong, or if you want to play online skirmish or multi-player games right now (and be able to choose the faction you start with), you have to create your own hero for each faction.
Best Answer
during the campaign, some buildings and upgrades are locked. As you progress through the campaign, they'll open up, sometimes during a mission after completing specific quests, sometimes on the next map.