we have configured federated-authentication in SiteCore 9.1 initial release by following the steps available at
Now in sitecore 9.1 Initial release when I click on 'Sign-in with Azure Active Directory" its redirecting to Microsoft login page and also validating the user successfully, but once redirecting to my sitecore page its not opening the dashboard or not logging to site core site, its because the user is not creating in sitecore.
but same configuration I tried with Sitecore 9.0 update 1 and update 2 its working fine and sitecore user is created and its opening the sitecore Dashboard.
So I checked the OWIN logs its showing me below logs
24824 13:17:12 WARN Microsoft.Owin.Security.OpenIdConnect.OpenIdConnectAuthenticationMiddleware - The nonce cookie was not found.
24824 13:17:12 ERROR Microsoft.Owin.Security.OpenIdConnect.OpenIdConnectAuthenticationMiddleware - Exception occurred while processing message:
Message: IDX21323: RequireNonce is '[PII is hidden]'. OpenIdConnectProtocolValidationContext.Nonce was null, OpenIdConnectProtocol.ValidatedIdToken.Payload.Nonce was not null. The nonce cannot be validated. If you don't need to check the nonce, set OpenIdConnectProtocolValidator.RequireNonce to 'false'. Note if a 'nonce' is found it will be evaluated.
at Microsoft.IdentityModel.Protocols.OpenIdConnect.OpenIdConnectProtocolValidator.ValidateNonce(OpenIdConnectProtocolValidationContext validationContext)
at Microsoft.IdentityModel.Protocols.OpenIdConnect.OpenIdConnectProtocolValidator.ValidateAuthenticationResponse(OpenIdConnectProtocolValidationContext validationContext)
Any help is much appreciated.