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Why can't I connect to the Push Notification Service?

"Notifications Problem. There's an issue with your phone that prevents you from receiving notifications for new messages."

When WhatsApp displays the above error message, it usually indicates that there is a network issue that is preventing a connection to the Microsoft Push Notification Service. Rebooting your device can help you reconnect to the Push Notification Service.

If you still get the error, please check the following

  • Go to Windows Phone Settings > system > battery saver. Turn the battery saver option [on] and [off], and then reboot your device (turn it off, wait 30 seconds and turn it on again).
  • Check if WhatsApp is pinned to Start. If it is, unpin it, reboot your device and pin to Start again. That way, if you miss a notification, you can still see an unread message count on the live tile.
  • Make sure your device is not on the edge or outside of a coverage area supported by your mobile carrier or your Wi-Fi network. The connection should be stable and reliable.
  • If Wi-Fi is being used and cellular data is not available, your device must have a clear path to the Internet for push notifications to be received. Some corporate networks might block the connection (for more information about captive Wi-Fi read here).
  • If roaming, please make sure to enable roam under: Windows Phone Settings > system > cellular+SIM or mobile network > Data roaming options.
    Note: Roaming will normally result in additional charges from your mobile provider. Please read this FAQ article for more information.
  • Windows Phone 8 only: Open Windows Phone Settings > applications > background tasks > WhatsApp. Tap block and then select the box Turn background tasks back on for this app the next time I open it. Reboot your phone and open WhatsApp.

To troubleshoot a connection issue, see this article.

Additional possible solutions

  1. Unpin the Store app from Start.
  2. Erase Internet Explorer's history.
  3. Add a new language to the keyboard (Choose any language that requires a download; you can remove it later, after reinstalling WhatsApp).
  4. Restart your device (turn it off and then on again).
  5. After restarting, uninstall and reinstall WhatsApp.

Cheers,
WhatsApp Support Team