You have reached this page because you have tried to login to a outdated service through SURFconext. Follow one of the two steps below to solve this.
If you are using a mobile app, this error can be caused by an outdated app. Update the app in your app store and try again! If this did not work, contact the support desk of your application.
If you are trying to log in to a web application in your browser you need to contact the support desk of your application. They will help you get going.
If you are a service provider and you haven't migrated yet, click here for information how to migrate your instance in SURFconext.