Immediately run a Windows Defender or Malwarebytes scan. Fake installers often disguise themselves as "Opera GX Optimizer" or "Opera GX Pro." Uninstall that immediately and follow the official link above.
The file name should be something like OperaGXSetup.exe . Avoid third-party "download managers" or "mirror sites." download opera gx
Gaming and research sometimes mix poorly. If you have... sensitive tabs open, or just 50 tabs killing your performance, there is a dedicated button on the top right (the GX logo). Clicking it kills every tab except the active one immediately. It is a hard reset for your browsing session. Immediately run a Windows Defender or Malwarebytes scan
Open your current browser (Chrome, Edge, or Firefox) and go to the official URL: https://www.opera.com/gx download opera gx