We recommend periodic backup in at least 3 methods.
1. Sync online backup
If you haven't already, Go to your Settings/Preferences and Enable Sync. Then Sync your library
2. Compressed Library
If your library is large, make a compressed library and save it on an external drive. PC Menu below, MAC menu to the right
MAC
You will be able to select the details about the library, such as whether to include file attachments, selected references, or the entire library. Both PC and Mac options will look the same.

Click next. The final step is to navigate to the place you want to save the new file. We suggest putting it on a USB or other external drive. it's also a good idea to rename the file so that the date of backup is included.
3. Citations only export format (.RIS)
The previous library backup methods are for use with a version of EndNote. You should create at least one file type that can be opened by other citation managers. The plus is that you'll have a quick way to make sure you don't have to recreate your work in collecting references and citations. The down side is that this will not bring in your file attachments.RIS export is a quick method.
- Go to the File menu and select Export
- The default name is your Library Name. You may want to rename the file to something that will include the backup date.
- You have three options: "Save file as Type", "Output Style" and a check box option to only export "Selected References" (highlighted items) instead of the whole library. See images below.
- For RIS export, select "Text only" as the file type and "RefMan (RIS) Export" as the Output style.
- Make sure you'll remember where you save the file.
- One the file is saved, if the file extension is .txt, rename the file so the extension at the end is .ris
- Save the .ris file. The icon will usually change once you've done this.
Now you all major citation managers should be able to import your references.


Is there a way to export both my citations and attached PDFs to another citation manager?
Zotero and Mendeley both provide directions to import EndNote citations with PDFs; however, users report varying levels of success. See the Transferring section for the instructions. Make sure you backup and keep an extra copy of the Endnote Library before attempting. In general, this process works best if you are importing to a new, empty citation management library, as the relative file locations in Endnote must stay the same. Having references and files already in the new library can cause pathway errors.