It could be. The problem is another program is pulling of that port if i understand it right. So because that port is already in use dfx2 errors out because it cannot connect through it. Simple as changing the port, since dfx2 uses a huge range of ports to connect. I'm no wiz, but it couldn't hurt to try it if your dfx2 is locking up. i would also check antivirus and firewalls blocking dfx2.
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