Started having the same issue here when I tried to reinstall the game after some weird glitches - before I uninstalled the Java version, the launcher was slow to load, and when it opened it would only offer offline options and refused to connect to the internet.
EDIT: Just to clarify, I've tried just about everything else here - changing my DNS seems to do nothing.
EDIT 2: Wait, no, never mind. Finally switched over to Google's DNS, and the launcher opens just fine.
Started having the same issue here when I tried to reinstall the game after some weird glitches - before I uninstalled the Java version, the launcher was slow to load, and when it opened it would only offer offline options and refused to connect to the internet.
EDIT: Just to clarify, I've tried just about everything else here - changing my DNS seems to do nothing.
EDIT 2: Wait, no, never mind. Finally switched over to Google's DNS, and the launcher opens just fine.