[MC-208326] I cant make a single player world or join a server/realm and a has a text show up

"java.lang.IllegalStateException: failed to create a child event loop" is what is popping up and I disabled every firewall and it still doesn't work

Related issues

duplicates

MC-34749 Hopper: java.lang.IllegalStateException: failed to create a child event loop - Caused by AntiVirus / Firewall software

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migrated 2020-12-13T08:32:26Z

[media]

Avoma 2020-12-13T10:18:49Z

Hey there!

This report looks to be a duplicate of MC-34749, which was later marked as invalid as this issue is caused by an Anti-virus / Firewall software. See the duplicated link for more info on this problem.