Emulating IE7 in IE8 – By adding a Http Header in IIS

Introduction

If an ASP.NET web application is working fine in IE6 & IE7 and if you want that the same web application will work in similar manner with IE8 browser without any problem, then you can do it easily by emulating IE7 in IE8 by various ways. In this blog I’m going to explain how can achieve it by simply adding an Http Header in IIS.

Adding an Http Header

1. Step I: Open IIS, select your website and select properties by right clicking on it.
   
   
   
2. Step II: Now select Http Header tab from property window.
   
   
   
3. Step III: Next click on add button and add an Http Header with Header Name as ‘X-UA-Compatible’ and Header Value as ‘IE=EmulateIE7’.
   
   
   
   
   
   

Conclusion

That’s it. Just run the application.

Now one question - How’ll you know that your ASP.NET web application is running in IE7 Compatibility Mode? Well very simple – If your ASP.NET web application is running without adding Http Header in IIS, then there a Compatibility Mode tab will be appear just after address bar in IE8 browser; and if you’ve already added Http Header in IIS, then Compatibility Mode tab will not be appear in IE8.

Please let me know if you've any query.