UPDATE: This issue has been resolved!

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Hello everyone. We're aware of an issue currently affecting connectivity for Rainbow Six Siege on Xbox One and are working towards resolving this. We apologize for any inconvenience caused and appreciate your patience. Please be sure to check this thread for future updates. Thanks.

UPDATE 4PM EST: ​​We are still investigating the issue affecting connectivity for Rainbow Six Siege on Xbox One. Thank you for your patience and understanding.