Open endnote database at the same time from two different computers

Good afternoon,

Is it possible to open an endnote database at the same time from two different computers? I try to open a database that is being used by co-workers and I get an error. 

Thanks a lot!

If a desktop library is open in the desktop application, it can’t be opened by a second user, unless the library is READ ONLY (for example in a read only folder).  Note that the EndNote developers do not recommend ever keeping the library on a network drive or ever ever in the cloud, unless you are using EndNotes “shared library” or “shared groups” tools.  

The best way to handle a shared library is for one user to share the library  (from you or to you) and opened as a “shared library”.  This can be shared with Read only, or read/write access I believe in EndNoteX9 or EndNote20.