Activation Error

[Guest]

I have downloaded an e-book from Harper-Collins but, when I try to read it, I get this message: Error! Check Activation.

What does that mean?@

[cselhost]

Hi Magister,

You need to manually delete the activation file and then resign in. Please follow these steps:

You must have administration authority.

On Windows it can be found here:
Open Windows Registry by using the command prompt and typing 'regedit' or by opening the start menu and searching for 'regedit'.

Search for the following folder:
HKEY_CURRENT_USER\Software\Adobe\Adept\Activation

The 'Activation' folder can be entirely deleted.

On Mac it can be found here:
In Finder, find the 'Go' option on the menu bar and click 'Go to folder' and type the following in:

~/Library/Application Support/Adobe/Digital Editions/

Delete the activation.dat file within the 'Digital Editions' folder.

Restart ADE and it should be deactivated at this point. You should be good to sign back in.

[Guest]

Thank you!!  I had the exact same problem and this solved it!!  I had to re-authorize my computer, but now it works! THANKS AGAIN!