I have Adobe Digital Editions 4.5 installed on my Windows 7 PC. However, when I download and try to open .acsm files within Digital Editions, to then transfer to my Nook ereader (from Overdrive - library books that I borrow), I always get an error message that reads "Error! Check activation"
I have no idea what this means and have asked in a support chat. The chat operator directed me here.
Any help is greatly appreciated.
There is something wrong with your activation file and you need to manually delete it and then reactive ADE. Please follow these instructions:
You need to delete out a few registry keys to clear the activation for ADE. 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:
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.