Browser header mystery


hake

Member
Local time
9:31 PM
Posts
11
OS
Windows 23H2, 24H2
I am running a Rufus assisted installation on incompatible hardware of Windows 11 23H2, upgraded from Windows 10. I have just done a check with Steve Gibson's "ShieldsUp!!" and the browser header is as follows:-

Connection: keep-alive
Content-Length: 31
Content-Type: application/x-www-form-urlencoded
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,image/png,image/svg+xml,*/*;q=0.8
Accept-Language: en-GB,en;q=0.5
Cookie: ppag=zuhygut2gvnnw; pcss=zuhygut2gvnnw; pico=dbfq5ltar45ex; tpag=zuhygut2gvnnw; tcss=zuhygut2gvnnw; tico=dbfq5ltar45ex
Host: www.grc.com
Referer: Shields UP!! System Error
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:128.0) Gecko/20100101 Firefox/128.0
Origin: Home of Gibson Research Corporation
DNT: 1
Upgrade-Insecure-Requests: 1
Sec-Fetch-Dest: document
Sec-Fetch-Mode: navigate
Sec-Fetch-Site: same-origin
Sec-Fetch-User: ?1
Sec-GPC: 1
Priority: u=0, i
FirstParty: Home of Gibson Research Corporation
ThirdParty: Home of Gibson Research Corporation
Secure: Home of Gibson Research Corporation
Nonsecure: Home of Gibson Research Corporation
Session: ac2uanrdjz2ee

Notice that the user agent line identifies the OS as (Windows NT 10.0; Win64; x64; rv:128.0)
Isn't this a bit odd? Is this a bug in Firefox?

Shouldn't the user agent information correctly refer to Windows 11?

This installation of Windows 11 otherwise works very well.
 
Last edited:

My Computer

System One

  • OS
    Windows 23H2, 24H2
    Manufacturer/Model
    Various
    CPU
    Intel Core i3, i5, i7
    Hard Drives
    SSD
    Internet Speed
    50 MB/sec
    Browser
    Firefox ESP
    Antivirus
    Avast Free
Shouldn't the user agent information correctly refer to Windows 11?
This is normal: the version information for Windows 11 still refers to Windows 10 since I suspect it was originally intended to be a feature update.

Code:
reg query "HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion" /v CurrentMajorVersionNumber
 

My Computer

System One

  • OS
    Windows 11
Thanks Torus. I have read that Windows 10 and Windows 11 use the same kernel so this would confirm the information you have kindly presented to me.
 

My Computer

System One

  • OS
    Windows 23H2, 24H2
    Manufacturer/Model
    Various
    CPU
    Intel Core i3, i5, i7
    Hard Drives
    SSD
    Internet Speed
    50 MB/sec
    Browser
    Firefox ESP
    Antivirus
    Avast Free
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