Needs update and agent string for Windows 11
It seems this has been abandonded despite being recommended by many bloggers. There is no string for Windows 11.
The UA list was updated a few weeks ago: 46f2f2865842ee2facb60749cb91fa325ce074cf
Windows 11 will share the same Windows version number in the user-agent string, will need a new header called Sec-CH-UA-Platform-Version to make the difference.
Reference:
https://bugzilla.mozilla.org/show_bug.cgi?id=1693295
https://docs.microsoft.com/en-us/microsoft-edge/web-platform/how-to-detect-win11
User-Agent strings won't be updated to differentiate between Windows 11 and Windows 10. We don't recommend using User-Agent strings to retrieve user agent data. Browsers that don't support User-Agent Client Hints won't be able to differentiate between Windows 11 and Windows 10.
A workaround to avoid similar issues may be to add a Windows 11 option still, but just use the same version number in the UA string.
@PeterDaveHello Is there a method to import the updated string list to the Firefox version of the addon? I note the Chromium versions of this extension have been updated, but the Firefox one hasn't seen an update in over a year. I think that's what the OP is referring to:
https://addons.mozilla.org/en-US/firefox/addon/user-agent-string-switcher/