Ever since my Rainbow 6 Siege game crashed in August, I have been unable to hear or speak to any teammates in my Rainbow 6 games. My mic and headset work fine in every other program, CS-GO Discord etc. I would really appreciate some help. I have tried everything from uninstalling everything to contacting my ISP. It really makes the game unplayable without a 5 man team.
Thanks for the update everyone, if you feel comfortable are you able to tell us which country you live in?
Some internet service providers can block all SIP-based VoIP traffic, including many ISPs in the Middle East. You might be able to work with your ISP to allow SIP-based traffic, or you may be able to use a VPN to connect to the service.
It is worth reaching out to your ISP provider directly to ask about this, if you are unable to use voice chat in the gam to be sure they have not activated a ban.
In the meantime, please check out our article which mentions this and other troubleshooting you can perform here -https://support.ubisoft.com/en-US/Article/000060669/