There is a real problem with the launcher. When I install minecraft is ok, but when I choose the button: "Play" the window appear, but when is loading, then the computer says: " Minecraft is not responding" and then "Java is not responding" I tried to install minecraft in the different ways from the official website, however, it's the same.
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Thank you for your report!
We're actually already tracking this issue at MCL-6550, so we will resolve and link this ticket as a duplicate.
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