During the setup for SAML/SSO for Umbrella dashboard login, you may find that your configuration appears to be 'stuck' and cannot be reset to default. Even hitting cancel does not put it back to the original state.
In fact, this is just a warning condition and you can still set up your authentication. If you wish to start over again, go into the SAML wizard, click Previous to return to the original screen (where you pick your SAML provider) and go forward from there.
If you uploaded invalid or incorrect metadata for your provider, you can also replace it in the Verify step. Once you've passed the step where you verify the metadata, you'll be given another chance to confirm your configuration before the login is moved from user/password to your SAML SSO provider.
We are working on improving this experience in an upcoming version of Umbrella.