When I run the MC Launcher, it loads a blank screen.
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Thank you for your report!
We're actually already tracking this issue in MCL-12722, so I've resolved and linked this ticket as a duplicate.
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make the launcher a shortcut then right click it. look for a button that says "Troubleshoot Compatibility" and click it. then click "Try recommended settings". click "Test the program..." and if its not blank and it actually shows up, click the "Next" button and then click the button labeled "Yes, save these settings for this program"