It will come at the cost of all session data from your main profile.

Download the latest version of the installer for opera gx then run the installer.

Should come at Update and Install.

Run the installer and everything was fixed for me and all session data on other profiles loaded fine

Hope this helps

not worth the hassle it seems.

Issue: Opera GX Restarts on Mac Sonoma

Ciao there! If you're encountering an issue where Opera GX restarts immediately upon opening on Mac Sonoma, and you cannot access safe mode or configuration settings, here's a simple solution.

Solution: Update Opera GX using the Brew package manager for simplicity and reliability.

Steps to Resolve:

1. Open the Terminal on your Mac.
2. Install or update Opera GX using the Brew package manager with the following command:

   brew install --cask opera-gx
   

3. Brew will handle downloading, upgrading, and replacing the existing app for you. For example, here's what you might see during the process:

   ==> Downloading https://formulae.brew.sh/api/cask.jws.json
   ######################################################################## 100.0%
   ==> Upgrading 1 outdated package:
   opera-gx 114.0.5282.243 -> 115.0.5322.113
   ==> Upgrading opera-gx
   ==> Downloading https://get.geo.opera.com/pub/opera_gx/115.0.5322.113/mac/Opera_
   ######################################################################## 100.0%
   ==> Backing App 'Opera GX.app' up to '/opt/homebrew/Caskroom/opera-gx/114.0.5282
   ==> Removing App '/Applications/Opera GX.app'
   ==> Moving App 'Opera GX.app' to '/Applications/Opera GX.app'
   ==> Purging files for version 114.0.5282.243 of Cask opera-gx
   🍺  opera-gx was successfully upgraded!
   

4. Once the upgrade is complete, launch Opera GX. It should now open smoothly without issues.

Outcome: This method resolved the restarting issue, and Opera GX worked seamlessly afterward.

Note: A similar approach might work on Windows, but Brew isn't available for Windows.

Feel free to share if this resolves your issue?
🧉

Sorry for my late response, but I had a very busy week.

@TiqkleMeElmo, what I meant was this icon in the Windows taskbar:

In an English Windows installation, it should be called "New private window" (or something like this). If you haven't had a taskbar entry so far, you can just create one.

@thefufuateme, not even sure what you are meaning, but maybe the additional information, including the screenshot, may help. If not, you could maybe add some more information like the installed GX version, screenshots, and/or screencapture of the current behavior and so on.

I hope this helps! If you need further assistance or more revisions, feel free to let me know!

So first of all, here is how you can do the whole stuff that @davidoliver-1 mentioned in his post:

• Right-Click to your OperaGX in Taskbar or Start menu and select "New Private Window" instead of starting it normally
• Now OperaGX should start and you are able to access all required functionality to do the magics that @davidoliver-1 described.
• In my (first) case where I faced this issue, it was enough to just start OperaGX in private mode one time. After I closed it I was directly able to start it in normal mode again and even if all of my previously opened tabs where gone the browser did his great work as usual.

Additional information from the 2nd time I've faced this issue:

• Today - about two weeks after the story above - starting in private mode wasn't enough. The browser closes and closes himself again and again. No chance to make any changes and even the cli start with --disable-extensions didn't work.
• At the end of the day I opened it in private mode and then I switched to the settings and extension settings. In extension settings I got information about a broken extension, and I removed it completely.
• Additionally, I removed cache, browser history, stored tabs and so on, just to make sure that this was not another reason for the behaviour.
• Afterwards I left private mode and restarted in normal mode, and everything works absolutely fast and smooth again.

I really hope it may help you guys and even if I'm not an Opera employee I really appreciate this browser!