401 : Sorry, you are not allowed to create posts as this user

I have tried the same thing mentioned in it and I am getting below error message.

the account I am using is the Administrator and I have WP BASIC Auth (https://github.com/wokamoto/wp-basic-auth) plugin installed.

{
    "data": {
        "code": "rest_cannot_create",
        "message": "Sorry, you are not allowed to create posts as this user.",
        "data": {
            "status": 401
        }
    },
    "headers": {
        "Allow": "GET"
    },
    "status": 401
}

[mattcullenmeyer]

I spent hours facing the same problem and finally got it to work. The only plugin I installed was Application Passwords. I also edited the .htaccess file per the comments above. The issue I ran into was what username to use for the authorization header. I was trying to use the name assigned to the password generated through Application Passwords. In reality, you should use your actual username, which in my case is just “admin” (along with the password from Application Passwords).

[samdoj]

No amount of hacking the .htaccess file nor installing this plugin has the correct effect. Whenever I try to upload media with credentials that I know to be correct, I get “Sorry, you are not allowed to create posts as this user”. This makes absolutely no sense as the user is me and I’m an admin.