For ADE:
I believe you plug in the unit and hit Ctrl-Shift-E. However, according to this thread, there isn't really a need to de-authorize anything from ADE.
https://www.mobileread.com/forums/sho...-authorize+ade
For the sony software:
You prob. would like to de-authorize since you gain back an authorization allowance. To do so, open up the sony software and log into your account. I don't have the software but I believe you go to manage accounts and you can deauthorize it from there.