Save and backup your EndNote Library regularly to ensure you do not lose your work.
To do this, create a compressed EndNote Desktop library. Compressed copies are also the best way to email your library. However, please note that the recipient must have the desktop version of EndNote to view the .enlx file.
To create a compressed library:
1. In your EndNote Library on the toolbar, select File > Compressed Library (.enlx)
2. The Compressed Library (.enlx) dialog box will open. Choose from the following options:
- Create or Create & Email your EndNote library
- With or Without File Attachments
- Compress All References in Library, or Selected Reference(s), or All References in Group/Group Set

3. Click Next. Then, select a location to store your compressed library
4. Name the file (the extension is .enlx), then click Save