If you are asked for a product code, it generally means that you haven't extracted the files from the ZIP folder correctly.
You may contact EndNote's Help Desk 24 hours a day, Monday-Friday via email at endnote.support@clarivate.com or by phone at 855-258-5858.
You can archive a compressed EndNote library to a cloud storage service. If you need to use this archived file in the future you should move it to your hard drive before decompressing it. You should not store your working library to any online synchronization service as this may result in corruption of your library.
EndNote automatically saves changes to your library, so there is no Save or Save As command. You can back up your library by using the 'Save a Copy' command to create an exact copy of your library. To create a copy of your library:
The new library is saved to disk, where you can then open it with EndNote. This command creates a .ENL file as well as a .DATA folder for the new library, and copies all necessary files and figures to it.
You can also create a compressed copy of a library and later restore the compressed library with EndNote. To create a compressed copy of your library:
A: If you accidentally delete your EndNote library (the .enl file) but still have the associated .Data folder, you may recover your deleted library from the Data folder by using Notepad:
Library: A database of literature references. Each reference in an EndNote library is stored as an individual record with different data fields for the the author, title, etc. References can contain more than just citation information (e.g abstracts).
Reference type: Templates for the individual records in an EndNote library (e.g. journals, books, newspaper articles, conference proceedings).
Field: Each Reference Type contains a variety of Fields, depending on the Reference Type. Examples of Fields include author, title, year, etc.
Import filter: Files that provide a match between references downloaded from databases and the data fields in EndNote records. Import filters are designed to work with specific information providers (such as Ovid) and specific databases (such as PubMed)
Output style: Files used to control the appearance of in-text citations and references in a bibliography.