I can communicate with anyone ON my friends list but cannot respond to whispers of people NOT ON my friends list. This is a known issue and people are complaining about it and have been for months. This is irritating enough you can and will lose players over it. I am a developer by trade. This seems to either be a cross platform issue or something to do with the communication method blocking where it shouldn’t. I’d be happy to pair off with one of your Devs to trouble shoot this problem. The error number I have been getting is a 7000 error when trying to use battle net to those same people I cannot whisper. Which means someone already put a try catch in there and gave the method that is firing an identifier. So I would imagine you would have to search the code and start debugging there. Likely it’s not intrinsic to diablo 4, unless it is specific to Diablo 4 players in cross play since it seems to be impacting battle net. At which point you’ll need someone on PC, Xbox and Play station who are not friends try to whisper one another. 2 Hours testing max to Repro and then a couple hours - days to research, Identify and fix the issue. I would guess the same communication structure (an API most likely) is receiving an unexpected format or there is something denying comms permissions on failure. Start there. Again, happy to assist in debugging if you need.