Having the same issue - support directed me to follow this ticket.
I consistently get 'Internal Exception: java.io.IOException: An existing connection was forcibly closed by the remote host' awhile (~5-10 minutes) after connecting to my realm from a specific computer on my home network.
Other computers on my home network do not have the same issue, other players on different networks have not experienced the issue either. I have tried both via ethernet and over wireless. I've tried uninstalling Minecraft and java and reinstalling Minecraft (I didn't reinstall java after finding out it was no longer required).
Just before setting up the Java Realms server I set up a Bedrock Realms server and did not have any issues.
I used Wireshark to watch my network traffic leading up to the error occurring. It seemed to consistently fail after a TCP Packet was lost and a retransmission occurred.
Feel free to reach out if I can offer any more details regarding the issue.
Having the same issue - support directed me to follow this ticket.
I consistently get 'Internal Exception: java.io.IOException: An existing connection was forcibly closed by the remote host' awhile (~5-10 minutes) after connecting to my realm from a specific computer on my home network.
Other computers on my home network do not have the same issue, other players on different networks have not experienced the issue either. I have tried both via ethernet and over wireless. I've tried uninstalling Minecraft and java and reinstalling Minecraft (I didn't reinstall java after finding out it was no longer required).
Just before setting up the Java Realms server I set up a Bedrock Realms server and did not have any issues.
I used Wireshark to watch my network traffic leading up to the error occurring. It seemed to consistently fail after a TCP Packet was lost and a retransmission occurred.
Feel free to reach out if I can offer any more details regarding the issue.