How to deeply spoof the browser fingerprint User-Agent?

[yuyiqilin]

Is there an existing issue for this?

• I have searched both open/closed issues, no issue already exists.

CefSharp Version

131.3.10

Operating System

Windows 11

Architecture

x64

.Net Version

.Net 4.8.1

Implementation

WPF

Reproduction Steps

How to deeply spoof the browser fingerprint User-Agent? After I modified the User-Agent, the request's User-Agent indeed changed, but the server refused to respond. When I don’t spoof the User-Agent, the response is normal. I think it’s because the front-end code, such as JavaScript, detects the real User-Agent, and since it doesn’t match, the service is rejected. How can I spoof or deceive the JavaScript detection

Expected behavior

How can I spoof or deceive the JavaScript detection

Actual behavior

I can not spoof or deceive the JavaScript detection

Regression?

No response

Known Workarounds

No response

Does this problem also occur in the CEF Sample Application

Yes using WPF/OffScreen command line args

Other information

No response

[amaitland]

In future please use https://github.com/cefsharp/CefSharp/discussions to ask questions.

There are examples of changing the UserAgent at https://github.com/cefsharp/CefSharp/wiki/General-Usage#useragent