Detecting incorrect windows 7 as windows 10

[MarianoFacundoArch]

Opening ua-parser-js official website as well, a windows 7 is detected as windows 10:

{
  "ua": "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/109.0.0.0 Safari/537.36",
  "browser": {
    "name": "Chrome",
    "version": "109.0.5414.75",
    "major": "109"
  },
  "cpu": {
    "architecture": "amd64"
  },
  "device": {},
  "engine": {
    "name": "Blink",
    "version": "109.0.0.0"
  },
  "os": {
    "name": "Windows",
    "version": "10"
  }
}

[MarianoFacundoArch]

Same problem with Windows 8.
However https://whatsmyos.com/ always detects all correctly...

[MarianoFacundoArch]

For Windows 8, in ua-parser I get:

{
  "ua": "Mozilla/5.0 (Windows NT 6.2; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/109.0.0.0 Safari/537.36",
  "browser": {
    "name": "Chrome",
    "version": "109.0.5414.75",
    "major": "109"
  },
  "cpu": {
    "architecture": "amd64"
  },
  "device": {},
  "engine": {
    "name": "Blink",
    "version": "109.0.0.0"
  },
  "os": {
    "name": "Windows",
    "version": "10"
  }
}

So it always returns OS windows 10, which is not true.

[MarianoFacundoArch]

@faisalman ?

[faisalman]

Hi @MarianoFacundoArch, Are you using the same browser for those tests? Because the detected results are the same.

[MarianoFacundoArch]

What do you mean ?
Windows 8 is not detected correctly in us parser when using client hints

[faisalman]

Hi, sorry, I mean what browser do you use & version? would be helpful if you have more details of the browser that I can investigate

[MarianoFacundoArch]

Hi Faisalman, of course its windows 7, same one in browserstack.
If you want give me an url of whatever you want me to enter and i give you all the details

[janbrasna]

FYI the list of platform tokens ("NT x.y" versions) is documented here: https://learn.microsoft.com/en-us/previous-versions/windows/internet-explorer/ie-developer/compatibility/ms537503%28v=vs.85%29#platform-tokens

Version	Name
Windows NT 10.0	Windows 10
Windows NT 6.3	Windows 8.1
Windows NT 6.2	Windows 8
Windows NT 6.1	Windows 7

so the first UA (W7) reports itself as Win10, the other UA nonetheless looks like W8 and should have been detected as such…

[janbrasna]

Trying some UAstrings in current demo, they report correctly:

• Win10
• Win8
• Win7