The problem is with my salesforce.com Customer Account

Hi guys,
The problem is with my salesforce.com Customer Account. I tried to login and received an error message. It is indicating to contact salesforce.com administrator. I do not understand the error message. How can I get a remedy of this issue? Please help.
Thanks in advance.Â

salesforce
Login Error
Your login attempt using single sign-on with an identity provider certificate has failed. Please contact your salesforce.com administrator for more information.
