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Los usuarios obtienen el error 412 cuando intentan conectarse a Spotify. El error es: “Es viable que un firewall esté bloqueando Spotify. Actualice su firewall para permitir Spotify «.
El error 412 significa «Precondición fallida», por lo que le sugiero que elimine todas las cookies y los datos de formulario almacenados en su browser. Posteriormente conéctese a Facebook. Mientras permanezcas conectado, abre Spotify. Inicie sesión para Spotify.
Este error suele pasar cuando se transfiere un token incorrecto o con formato incorrecto a través de la API. Puede ser Spoitify, que modifica su sistema, o muy probablemente Facebook, que modifica su login en la API. Si el problema persiste, es viable que se requiera más información.
How to fix Spotify error 412:
Inicie sesión con un nombre de Username en lugar de un email / Facebook.
In most cases, you can easily fix this particular problem by using your username (instead of your Facebook account or email address when you log in to your account).
Several concerned users announced that the problem had not recurred and that they could log in regularly if they tried to use their username in the box.
Other affected users indicated that they were able to fix the issue by logging into another account, logging out, and then logging back into the account that previously failed.
Try these two tactics and move on to the next method if you still encounter the 412 error when trying to connect to Spotify.
Disable the wireless router firewall
To fix Spotify error 412, you can disable router firewalls by connecting to your router's management interface and looking for a firewall section. Management interfaces vary by manufacturer and model, so your wireless router may not have a firewall section. If so, click this section and disable the firewall.
Reenviar un puerto. Si el firewall evita que una computadora externa se conecte a su client interno, debe reenviar un puerto a su cliente.
Encuentre su IP adress interna.
Click “Start -> Run…” and type “cmd” in the field. When the command line appears, type "ipconfig" and press "Enter." Find your IP address in the statistics that will print.
https://community.spotify.com/t5/Desktop-Windows/Error-412/td-p/542554
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