Support articles specifically for Adobe Digital Editions (ADE).

• The ADE user interface has disappeared
• Error message: The original document file is missing!
• Error message: Errors were encountered in this item
• Error message: Unable to Open "Ebook Title"
• Error message: E_AUTH_USERID_INUSE
• Using Screen Readers with Adobe Digital Editions
• Error message: E_ADEPT_NO_TOKEN
• Error message: CE_COPY_NOT_ALLOWED
• Error message: E_ADEPT_REQUEST_EXPIRED
• Error message: E_ADEPT_INTERNAL
• Error message: E_AUTH_BAD_DEVICE_KEY
• Error message: E_AUTH_BAD_DEVICE_KEY_OR_PKCS12
• Error message: E_IO_WRITE
• ADE Installer can't be opened because it is from an unidentified developer
• Error message: ret_record_core_invalid_client_cert
• Error message: E_IO_cannot_open
• Error message: Activation Server Error
• Error message: CONNECTION ERROR- Digital editions could not connect to the activation server. Please make sure you are connected to the internet.
• Error message: Error! Check Activation.
• Error message: E_AUTH_NOT_READY
• Error message: E_ADEPT_NOT_READY
• Error message: E_ACT_NOT_READY
• Error message: E_ADEPT_DOCUMENT_TYPE_UNKNOWN
• Error message: Adobe Reader could not open 'URLLink.acsm' because it is either not a supported file type or because the file has been damaged