So there I am, with nothing but my dagger and 4 enduring invisibility potions, all I need to do is sneak in, and out of the Thalmor Embassy. Easy, right? Or so I think. After I cause a distraction and grab my dagger and potions from the chest, I open the first door after having gulped a invisibility potion, and Charge past them real quick, and BOOM firebolts and lightning bolts fly at me, and I get smacked into a wall, my butt thouroughly kicked. What happened?! Does an invisibility potion NOT make you invisible? They turned on me faster than a hound on a bunny the moment I opened the door….
How does invisibility work in Skyrim
the-elder-scrolls-v-skyrim
Best Answer
I open the first door after having gulped a invisibility potion. That is where your issue lies.
You drank your potion before opening the door, which counts as an action that ends the invisibility effect. You want to drink your invisibility potions after you open the door to sneak past the Thalmor.
Though you can't be seen while invisible, you can still be detected if you make too much noise or do anything that would attract attention.
If you want to get your best experience of invisibility, you can use it in conjunction with Muffle (an apprentice level illusion spell and armor enchantment)