For a about a week now, each time I start up VSCode I get the annoying notification message in the title. Everything still works fine, just the notification.
I get the same issue.
I suggest you to not try and uninstall platformIO, since I did to debug on issue with intellisens 1.0.1 not working and I am unable to install it again, since it is not found in marketplace.
I’m not sure about “Code OSS” but definitely VSCodium cannot see the Microsoft Marketplace after a fairly recent update. I was using an older version for a while and I could still see the marketplace, but after an update, no more.
I was using that version to avoid the telemetry “problem”, but as I’ve got “Pi Hole” installed, it blocks the URL that the telemetry goes to, so I’ve been using the VSCode official release for a month or so now with no problems, and no telemetry.
If you wish to continue using the OSS version of code, you can try installing code-marketplace from the AUR. This patches the OSS configuration to include the urls so the marketplace is accessible