We are facin g an issue with SSO as well on CUCM 12.5 SU4. SSO worked fine for some months, now we get very often "SAML request errors". the problem increased over the days, now it is olways occuring. interesting: after restarting adfs services the first request went through successfully, afterwards SAML failed (independently of application: Jabber, Cisco UCM Admin, cups, ...).
Is this behaviour related to this specific issue?
regards,
andre
