java.lang.illegalstateexception: failed to create a child event loop

Question

Problem :

I am trying to run Java Applet and getting bellow error.

java.lang.illegalstateexception: failed to create a child event loop

Answer 1

I have faced the same error when i deployd my application to a Windows Server, however, this server has no antivirus software and the firewall is disabled. In my case, it's due to the Astrill VPN, if i disable the Astrill VPN, the issue would disappear.

Further Readings :

https://github.com/netty/netty/issues/7243