Windows 10 reached EOS (end of support) on October 14, 2025. For more information, see this article.

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Firefox is misidentifying my Windows OS as Windows 10. I have upgraded to Windows 11 quite some time ago. Why is Firefox not seeing this?

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Bruce
Bruce
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Firefox is misidentifying my Windows OS as Windows 10. I have upgraded to Windows 11 quite some time ago. Why is Firefox not seeing this and does it matter?

Firefox is misidentifying my Windows OS as Windows 10. I have upgraded to Windows 11 quite some time ago. Why is Firefox not seeing this and does it matter?

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James
James
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A Firefox 147.0 UserAgent on Windows 10 and 11 is Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:147.0) Gecko/20100101 Firefox/147.0

Windows 11 is basically based on the same NT 10.0 as Windows 10. https://en.wikipedia.org/wiki/Windows_NT#Releases

Perhaps when Microsoft actually makes a new version of Windows it will be based on a new NT to prevent this sort of thing.

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