I'm totally new user to Opera and wanted to try out Opera GX.

Downloaded the automatic installer, everything installs fine, but then when the Opera GX browser is supposed to open, I just get the animated splash screen then it closes and nothing! Re-trying to open Opera GX results in the same disappointing experience! No change if I uninstall or re-install, or if I use the 64-bit specific installer. However, if I use the 32-bit installer, then Opera comes up just fine!

So ... what gives? This an up-to-date Windows 10 PC and has never had Opera browser before. It does have Google Chrome browser installed however, my previous browser. Used this installer: Opera_GX_73.0.3856.438_Setup_x64.exe, the latest as of this writing.
No error or exception dialog pops up, so really no clue why I can't run the 64-bit version of Opera GX but I'd like to make you aware of the issue or figure out my problem and get it fixed.