ASP.NET Core 2.0 JWT Validation fails with `Authorization failed for user: (null)` error

Question

I\'m using ASP.NET Core 2.0 application (Web API) as a JWT issuer to generate a token consumable by a mobile app. Unfortunately, this token couldn\'t be validated by one con

Answer 1

Check signing key encoding in your token provider it can be for example UTF8 not ASCII.