When you uninstall an Access Gateway, the uninstall program prompts you for the credentials of the admin user for the Administration Console. If the primary Administration Console is not available for the authentication request, the uninstall fails.
To force the uninstall program to skip the authentication request, enter the following command:
/opt/novell/accessgateway/removeAccessGateway -DAM_INSTALL_AUTH_BYPASS=true
\Program Files\Novell\UninstallData\remove_AccessGateway.exe -DAM_INSTALL_AUTH_ BYPASS=true