Error Message that says “I/O Adobe DRM Error”
If you receive this error message, you may need to disable firewall, antivirus, or proxy software temporarily. Firewall, antivirus, and proxy software can intercept the activation request from Adobe Digital Editions to the activation server. If you are encountering this error, try temporarily disabling or verifying any software that may be blocking Adobe Digital Editions from accessing the internet or activation server. Also, verify your system’s date and time settings are correct.
If you are on a computer where you can’t change the firewall settings, you may not be able to read our ebooks. You can request a return here: http://cognella.com/returns/