Home/ Questions/Q 249923
In Process

The Archive Base Latest Questions

Editorial Team
  • 0
Asked: 2026-05-11T21:28:05+00:00

I’ve set up IIS6 to send the following headers Custom Header Name : X-UA-Compatible

  • 0

I’ve set up IIS6 to send the following headers

Custom Header Name: X-UA-Compatible

Custom Header Value: IE=EmulateIE7

that supposed to force IE 8 into IE 7 Compatibility mode. You can read more about it on MSDN .

I have noticed by looking in the Developer toolbar that if I have a DTD defined the document mode correctly gets set to IE 7, but the browser mode is IE 8. If the page doesn’t have a DTD the document mode gets set to Quirks and Browser Mode once again IE 8.

Am I doing something wrong. How do I force IE 8 to set IE 7 Browser mode.

Thanks

Share

Leave an answer

You must login to add an answer.

Need An Account,

1 Answer

  1. Editorial Team

    Browser Mode refers to the user-agent header sent by the browser. Since the UA has already been sent before the HTTP response comes back containing your EmulateIE7 directive, it’s too late to change the browser mode; only the document mode is changed.

    See http://msdn.microsoft.com/en-us/library/dd565628(VS.85).aspx#bdmodes

    • 0