We are currently having a problem accessing NonClaimsAware RelyingPartyTrust. We publish TFS externally and receive many error messages from event 12027 on the ADFS server. Only that the password or the username is not wrong! Access then also works, but before that access is very often denied. I suspect that the error is to be found in some temporal relationship between TGT and tokens from ADFS. Does anyone know such behavior? MfG Marcel