I found the answer in another discussionThe clean way to deauthrorize your computer is to launch ADE, and then press Ctrl+Shift+D (Windows) or Cmd+Shift+D (Mac). After deauthorizing, you will be forced to reactivate/authorize when you next run ADE.
Hi all, I had the same problem and I did the same steps, but now I can not even open the ebook that previously could read!
I changed my authorization because I need to read the ebook also in my tablet, but now I have an ebook just bought and can not read it!
Please help me.
I have been round in circles with this as well. Why admin cant make this a "sticky" I dont know but the solution is here "Cant Erase Authorizationin ADE" by DriverEight on 9 May 2016