I'm experiencing the same issue on a new Macbook Pro running OS X Sierra, vanilla Minecraft. Uninstalling, re-downloading, and re-installing the game didn't fix the issue. Issue persists regardless of what apps are running and whether or not I'm on VPN.
If I reboot my computer, the game launches without a problem. If I exit the game and try to re-launch, the issue recurs.
Jessie Schutz
I'm experiencing the same issue on a new Macbook Pro running OS X Sierra, vanilla Minecraft. Uninstalling, re-downloading, and re-installing the game didn't fix the issue. Issue persists regardless of what apps are running and whether or not I'm on VPN.
If I reboot my computer, the game launches without a problem. If I exit the game and try to re-launch, the issue recurs.