Greetings jessmerritt,
I do apologize for the library syncing issue that you’ve encountered. The reported EndNoteSync error would typically indicate a problem with the email address and/or password defined for your EndNote online account within EndNote’s preferences. To fix this credentials error -
-
Launch EndNote.
-
In EndNote, click “Edit>Preferences…”.
-
Choose the “Sync” tab along the left side of the Preferences window.
-
Make sure your email address is correct.
-
Clear the Password field and re-input your password information.
-
Click “OK” to close the Preferences window.
-
Make sure your EndNote library is open.
-
Click “Tools>Sync” to try syncing again.
If you still get the same credentials error, open a web browser, and navigate to http://myendnoteweb.com/ to try resetting your password. After resetting your password, return to EndNote’s Preferences>Sync tab to input that new password before attempting to sync again.
Please let me know if this helps.