Red "Error" banner appears when interacting with Raid Battles

In the Works
Last Updated: 09/01/2017

Some Trainers may experience a bug where they are unable to join or interact with a Raid Battle. Players may see a red error banner when experiencing this bug.

Updates:

Update 1: Many of the causes for this issue have been resolved in Pokémon GO in version 0.67.2 (1.37.2). Please download this update when it becomes available to you. We are aware of other causes for this issue and are actively working to resolve them.

Update 2: Most of the root causes for this issue have been addressed. However, we're still investigating some additional situations where the "error" banner appears during battle.

Workarounds:

Here are some suggestions that may help resolve this issue:

  • Use automatic (network provided) time and date 
    Make sure that your device's time and date is set to update automatically.
  • Stay within range of the Gym
    Don't move out-of-range of the Gym during the battle.
  • Check your internet connection
    Ensure your device is connected to a reliable data connection (Wifi, 3G, or 4G).