Having same issue here, friends were able to join my multiplayer game (Xbox One to Xbox One, non-realm) for weeks until one day - they now all receive the 'Unable to connect to world' error but I'm still able to join theirs.
My NAT type is open and I have no network issues nor do they, and all our privacy settings with Xbox are unchanged and normal.
All of us are on v.1.8.1 and consoles are up to date, world settings are also invite only and multiplayer is on. Have tried multiple resets, reinstalls etc. across all of us. Thanks.
Tiaan Pretorius
Having same issue here, friends were able to join my multiplayer game (Xbox One to Xbox One, non-realm) for weeks until one day - they now all receive the 'Unable to connect to world' error but I'm still able to join theirs.
My NAT type is open and I have no network issues nor do they, and all our privacy settings with Xbox are unchanged and normal.
All of us are on v.1.8.1 and consoles are up to date, world settings are also invite only and multiplayer is on. Have tried multiple resets, reinstalls etc. across all of us. Thanks.