I recieved error! check activation error in Adobe Digital Editions 4.0 after trying to upload a book from the public library the book is an epub book. I have tried to reinstall the software but it still wont work ,have also tried Adobe Digital editions 3.0 and still wont work. I tried to deauthorize the computer but the system tells me to come back later. What could be the problem?
For this problem, you need to deauthorize and authorize ADE again.
If due to some reason, you are unable to deauthorize ADE, follow the below steps:
Mac: Navigate to /Users//Library/Application Support/Adobe/Digital Editions and drag the activation.dat file to the trash.
ADE will be deauthorized now.
Now Authorize ADE again.
Choose Start > Run.
In the Open text box, type regedit and then press Enter. The Registry Editor opens.
In the left pane of the Registry Editor, locate the following registry key:
Right-click the Adept key and choose Delete.
In the Confirm Key Delete dialog, click OK.
Your authorization will be deleted.
Now Authorize ADE again
Hope this works !!.