[rabbitmq-discuss] Cant Start RabbitMQ after updating to 2.8.1 on Windows

[0x49D1]

Hello,
ive updated rabbitmq server from 2.7.1(which worked just fine in a
cluster) to 2.8.1 and now service fails to start.
log says that process was terminated unexpectedly(1067). In event
viewer i see the following:
RabbitMQ
   Erlang machine stopped instantly (distribution name conflict?). The
service is not restarted as OnFail is set to ignore.

Ive tried to uninstall rabbitmq, erlang, and reinstall them again. No
luck.
Cluster was with 2 nodes on different servers. After updating-on both
nodes rabbitmq cant start, tho ive managed(somehow) to downgrade one
node to 2.7.1 and now all clients work with that server. Another node
fails even downgrade, still returns the error ive provided in event
log.

Please help, i dont know what information exactly should i provide to
see where the problem is.
Thank you.