Third: I have to create a new System Variable
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Click on the ‘New’ button (see image above) and a new window should pop up asking for the name of the new variable.
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Enter ‘QT_OPENGL’ in the name field, and ‘angle’ in the value field (without the quotes).
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Click Okay
But nothing worked for me so far. I am very sad. 
Since CCP refuses to so much as acknowledge the issue and they are not upholding their side of the transaction, our only recourse is mass-unsub.
Same issue for me >4 days now. No response on support ticket, tried 4 different launcher versions. Old laptop also running Win10 with same Antivirus setup runs with no problem.
Installed the Update for Universal C Runtime, tried the OPEN_GL variable.
CCPlease let us know what to do.