Single Logout in the context of the UW NetID Login Service would be the action of clicking a Logout link or button that would cause the user to be logged out of all NetID Login-protected applications at once. Users who want to ensure they are fully logged out of LastPass need to take extra steps to end their SSO session because NetID doesn't use Single Logout. Similarly, this means that once a user has logged into another service with NetID, they could login into LastPass without being prompted for their NetID credentials. Once logged into LastPass with NetID the user's browser maintains a SSO session, allowing them to log into other applications using the same browser without having to re-enter their NetID credentials.

LastPass is currently configured to leverage NetID for SSO authentication like many other services at UW-Madison.

Single sign-on allows the user to log in once and access services without re-entering authentication factors. Single sign-on is an authentication scheme that allows a user to log in with a single ID (NetID at UW-Madison) to any of several related, yet independent, software systems. Logging out of LastPass doesn’t terminate the SSO session because Single Logout is not possible with the UW NetID Login Service. Users who leverage NetID to login to LastPass need to take extra steps to fully logout, because NetID is a Single Sign-on (SSO) implementation.

Last pass authentication