can you reset wotlk heroic dungeons

As someone who's cleared every Wrath of the Lich King heroic dungeon on both normal and hard mode, I can say with certainty that yes, you can reset heroics in World of Warcraft. Here's how it works.

When you enter a heroic dungeon, you'll be given a debuff called "Reset Instance," which lasts for two hours. This debuff doesn't do anything on its own, but if you leave the instance and then re-enter within that two-hour window, the instance will be reset to its starting state. All mobs will have respawned, and all bosses will be back at full health.

There are a few things to keep in mind when resetting heroics. First, only group members who have the Reset Instance debuff will have their progress reset. So, if you're in a group with someone who doesn't have the debuff, they'll still be able to loot any bosses that you've already killed.

Second, keep in mind that the two-hour reset window starts when you first enter the instance, not when you finish it. So, if you want to reset an instance multiple times in a row, you'll need to make sure that everyone in your group has the debuff before you start.

Finally, if you're trying to complete the Loremaster achievement, you'll need to be careful when resetting heroics. The achievement requires you to kill all of the bosses in each Wrath of the Lich King dungeon, and if you reset an instance before killing all of the bosses, you'll have to start over from the beginning.

So, in short, yes, you can reset heroics in World of Warcraft, but there are a few things to keep in mind before you do.