If your application is not able to authenticate using Azure AD, you may come across to this error message: “IDX10311: RequireNonce is ‘true’ (default) but validationContext.Nonce is null“.
Here is the full error message:
IDX10311: RequireNonce is ‘true’ (default) but validationContext.Nonce is null. A nonce cannot be validated. If you don’t need to check the nonce, set OpenIdConnectProtocolValidator.RequireNonce to ‘false’.
![IDX10311: RequireNonce is 'true' (default) but validationContext.Nonce is null](https://port135.com/wp-content/uploads/2019/04/IDX10311-1024x550.png)