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Every time I open the browser, I get a dialog asking me to open xdg-open. I have seen many posts about this and have been waiting months for it to get fixed. Today I just updated Vivaldi and was dismayed to see that endlessly irritating dialog pop up AGAIN!

Can someone please explain why this is so hard to fix?

@ krv1 Somehow you have Vivaldi constantly want to open another app on your system. Under normal circumstances this is normal. Example when I grab a torrent from a site that isn't configured correctly I'll get that popup asking me if I want to open a app. My suggestion is you run Vivaldi from a clean profile. No extensions, no bookmarks, just as it was the first time you installed it and launched it. I believe you won't be seeing that message. Then you can go back to your normal profile and disable each extension you have added and reenable them one by one restarting the browser each time till you get that message again. The you should know which extension is causing the issue and possibly why.

Ok, I only have one extension for Gnome (which came pre-installed in vivaldi) which I now disabled. When I restarted the xdg dialog was still there and said "a website wants to open this application," so I closed the 2 sites I had pinned. Now when I open vivaldi, the xdg dialog still pops up but closes automatically again after 2 seconds.

I made a new profile and it didn't happen there. I have seen several posts about this being a bug. Any ideas what else it could be?