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System Incompatible - Unable to Update W11

boxofbirds
boxofbirds
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Howdy, I've been using Firefox Nightly for well over a year now with no issues. However, as of 6/26/2023 at 2:30 AM, I suddenly received "Unable to Update, System Incompatible". Clicking on the link takes me to the page detailing the end of full support for Firefox on Windows 7, 8, and 8.1- but seeing as I'm on Windows 11, I'm not quite sure what would go wrong.

Howdy, I've been using Firefox Nightly for well over a year now with no issues. However, as of 6/26/2023 at 2:30 AM, I suddenly received "Unable to Update, System Incompatible". Clicking on the link takes me to the page detailing the end of full support for Firefox on Windows 7, 8, and 8.1- but seeing as I'm on Windows 11, I'm not quite sure what would go wrong.

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jscher2000 - Support Volunteer
jscher2000 - Support Volunteer
  • Top 10 Contributor
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One possible explanation would be if Firefox is set to run in compatibility mode for an earlier OS. This is generally set through the shortcut you use to start Firefox. If you right-click the shortcut, click Properties, then switch to the Compatibility tab, you want to see NO BOXES CHECKED. Then Windows will run Firefox using the full capabilities of your actual version of Windows and presumably stop lying to Firefox about your OS.

But since it's Nightly, it's also possible someone messed up a patch and it will need to be fixed tomorrow...