ASP.NET Core JWT Authentication to secure webAPI [Authorize] attribute Error 401 Unauthorized

Question

I develop API POST and it works correctly, but when I add [Authorize] attribute I got 401 Unauthorized in the postman even when I add token correct in header

 [Authorize(AuthenticationSchemes = JwtBearerDefaults.AuthenticationScheme)]
           
            [HttpPost]
            
            public async Task<ActionResult> Post([FromBody] CViewModel cVM)
            {
    // to do
            }

I just want to secure my API with JWT TOKEN, API authentication work correctly and generate a token but I can't figure why when I added [Authorize] attribute I got Error 401 Unauthorized in my POST API.

THANKS!

Does this answer your question? Web api core returns 404 when adding Authorize attribute — Ryan Wilson
thanks but no , i edit my question when I change to [Authorize(AuthenticationSchemes = JwtBearerDefaults.AuthenticationScheme)] I got 401 Unauthorized — wiem

Karney. Karney. · Accepted Answer · 2021-02-18T07:32:18

When you add [Authorize], this action can only be successfully accessed if the token is carried. One of possibilities is that the url is not mathced with this route. But a more important reason is that you do not configre the login path correctlly, or the login path does not exist. So you could check the configuration in startup.

ASP.NET Core JWT Authentication to secure webAPI [Authorize] attribute Error 401 Unauthorized

2 Answers