I am experiencing this issue as well when multiple accounts are logged in at the same time. Microsoft Family account: 1 adult, two children. Installed Hero Edition (+DLCs) from Windows 10 Microsoft Store under each account. Work around for now is using a VPN. This issue seems to be more recent; after the latest 1.8 version with the cloud save as we have never had issues playing together before.
I am experiencing this issue as well when multiple accounts are logged in at the same time. Microsoft Family account: 1 adult, two children. Installed Hero Edition (+DLCs) from Windows 10 Microsoft Store under each account. Work around for now is using a VPN. This issue seems to be more recent; after the latest 1.8 version with the cloud save as we have never had issues playing together before.