You can try the following steps:
1) Run as Admin (right click and choose this option).
2) Rename the My Digital Edition Folder under your My Documents Folder and try again to open.
Hi. I'm not sure where you mean I can run as Admin (right click where? In ADE?)
I renamed the folder. Nothing happened.
I uninstalled ADE and tried to install it again. Now it won't install -- I get an error message instead.
I got ADE to install again, but the epub file still won't open. Very frustrating!
Right click on the icon of digital edition and choose then run as admin.
That didn't work either. Not sure what else can be done. Since I have a book that needs reviewing before publishing, I've had the people who created the e-book send me the Kindle version and have reviewed the book in the Kindle app for PC.