Firstly, for those that don't know, we maintain a YouTube channel, called MerakiMinute that covers various features of Meraki in short, easily digestible videos
In the video below, we cover how to configure SAML authentication with the Meraki Dashboard, using OKTA as the IDP
https://youtu.be/-d37z6qCGLQ
Of course, other IDPs are available, which are covered here: https://documentation.meraki.com/General_Administration/Managing_Dashboard_Access/Configuring_SAML_S...
And for diagnosing login problems, you can use the link below:
https://documentation.meraki.com/General_Administration/Managing_Dashboard_Access/SAML_Login_History...