An explanation of the two terms.
You are considered an external user if you are using the Digital Library from outside the Wageningen UR network and you are not logged in to My Library. External users can't use the personalized services and have no access to licensed resources.
You are considered a guest user if you are logged in to My Library from outside the Wageningen UR network, but not recognized as a Wageningen UR employee or student. This will happen if you don't use your Wageningen UR e-mail address when registering for My Library.
Guest users can use most personalized services, but have no access to licensed resources.