MC-170762 is not up to date to the current launcher. Is their more updated version?
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The ticket you found was resolved and linked as a duplicate (the link can be found underneath the ticket's description).
Linking this to MC-38565 as well now.
Since MC-38565 is a connection issue, please do reach out to the Community Support.
I've done that and the results were the same. I'e tried to reset my router, flush dns, and checked my firewall. None have seemed to work.