Customize user agent string
Supported on: At least Internet Explorer 7.0
Registry
HKLM
Software\Policies\Microsoft\Windows\CurrentVersion\Internet Settings\User Agent HKCU
Software\Policies\Microsoft\Windows\CurrentVersion\Internet Settings\User Agent Options
Version text Description
This policy setting allows you to customize the Internet Explorer version string as reported to web servers in the HTTP User Agent header. If you enable this policy setting, Internet Explorer sends the specified custom string in the version portion of the User Agent header. If you disable or do not configure this policy setting, Internet Explorer sends the current Internet Explorer version in the User Agent header (for example, "MSIE 7.0").