I just downloaded an acsm file, normally I just drag it to ADE Library, but this time (for this specific book) I encountered an error: E-AUTH-BAD-DEVICE-KEY-OR-PKCS12. I understand that the solution is to erase authorization, and then login Adobe and authorize my macbook again. But before I erase authorization, I just want to confirm if this process will going to delete my existing books in the ADE Library? Because if it is, then that solution of de-auth and auth is not suitable for my situation. Any idea? Thank you.
I found the solution already - it does not erase the existing files in ADE. I did the following: go to Finder -> Go -> Go To Folder -> ~/Library -> Application Support -> Digital Editions -> delete the activation.dat. This will automatically erase authentication without deleting files. Then just do authorization by logging in adobe ID and password. The previous file in error can now be opened. FYI.