Use the following information to help troubleshoot issues with Basic SSO.
Basic SSO can only work with one instance of Access Manager. If you have two instances of Access Manager and the user has an account for both system, when they try to log in to Basic SSO applications, they will have issues. Basic SSO uses sessions for save and replaying the users’ credentials. Have multiple sessions open in the same browser will cause problems.
The Basic SSO plugin for Internet Explorer 11 does not detect if you have a prior version of the plugin installed. Ensure that you do not already have the Basic SSO plugin installed before installing the plugin. You must uninstall a previous version of the plugin from Windows Control Panel, not from the browser Manage Add-ons window. Whereas previous versions of the plugin were named Basic SSO, the current version of the plugin is named Single Sign-On Assistant. Currently, there is no upgrade path from prior versions of the plugin.
The Basic SSO plugin for Internet Explorer 11 does not support authentication to multiple instances of the browser. An cookie mismatch error occurs followed by a forced logout.