When you set up ADFS the default certificate is set to rollover over in 12 months. This causes an issue with the authentication as it in turn generates a new token signing certificate. To avoid this, you can turn automatic rollover off. (if your SSL certificate expires greater than 12 months time)
(In Windows PowerShell):
Add-PSSnapin Microsoft. Adfs .PowerShellSet-ADFSProperties -AutoCertificateRollover $falseSet-AdfsProperties -CertificateDuration 1095