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Firefox extensions think Firefox isn’t downloaded

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I'm using latest update (according to Firefox setting page) Firefox for Windows desktop. Searching extensions from the settings page, OR, by clicking on link to https://addons.mozilla.org/firefox/ send me to https://addons.mozilla.org/en-US/firefox/. But all extensions have the warning, "You'll need Firefox to use this extension" with no download button, only a button to send me to the Firefox download page. What's going on?

I'm using latest update (according to Firefox setting page) Firefox for Windows desktop. Searching extensions from the settings page, OR, by clicking on link to https://addons.mozilla.org/firefox/ send me to https://addons.mozilla.org/en-US/firefox/. But all extensions have the warning, "You'll need Firefox to use this extension" with no download button, only a button to send me to the Firefox download page. What's going on?

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You posted with an Edge user agent.

  • Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/111.0.0.0 Safari/537.36 Edg/111.0.100.0

Did you use another browser to post your question ?

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No, I'm in Firefox. I supposed I may have changed something in about:config to access a website that didn;t like Firefox, in the past(?), but I forget how I may have done that... I'm not using Incognito, not do I have an extension installed that I think would be the cause. I'll try the reset user agent link.

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Yep. That was it, I had override enabled. Derp. Thx

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You're welcome. The Edge user agent makes the Add-ons website think that you are using Firefox.