I had TimeCapsule set up and then got a new machine and moved things around. Anyway, when I go to my Airport Utility it wants to know my TimeCapsule password and I have no clue what it is. How can I retrieve it?
This is an easy one!
You need to give TimeCapsule a soft reset. All you need is a ballpoint pen or similar tool shape. Go to the back of your TimeCapsule and press the reset button for 1 second with the pen. This will give you 5 minutes to access TimeCapsule without needing a password. Open your Airport Utility (Applications –> Utilities –> Airport Utility) to update the password to a new one.
NOTE: More information from Apple can be found here on the different types of resets: https://support.apple.com/en-us/HT201945