SpotifyのFacebookログインでSpotify desktop client communication failed.と表示されてしまったら

https://www.facebook.com/settings?tab=security&view
アプリのパスワード -> 生成
するとパスワードが生成される。

そしたら、クライアントアプリのログイン画面で
メールアドレスにFacebookのアドレス、パスワードに生成された文字列をコピペしてログインを実行する。

Spotify desktop client communication failed.

Having trouble logging in to Spotify?

You must have an existing Facebook-connected Spotify account to use the "Login with Facebook" button.
If you have a Facebook-connected Spotify account, you can also login using your Facebook email address and password as your Spotify username and password. (These won't be stored.)
Internet Explorer 11 users: to use the "Login with Facebook" button, add https://login.spotify.com to the Trusted Sites security zone.
Advanced users: in order to use the "Login with Facebook" button, ensure that login.spotilocal.com resolves to 127.0.0.1. Network security protections might interfere with this.
Still need help? Visit Spotify Community for more information.

reference:
SOLVED: It was because I have 2 factor security turned on.

二段階認証を実行しても正常にリターンできてたのだけど、なんでだろう。
まぁ解決できたので良しとする。