Browser support Internet Explorer 10 - Compatibility Mode

Question

I am developing an application using a proprietary front-end framework. The framework supported only Internet Explorer 7, 8 standards.

Now as a new requirement, we are testing our application in the Internet Explorer 10. I tried it in three personal computers having the same browser settings as described below.

Internet Explorer Version: 10.0.9200
Browser Mode: IE 10 compatibility View
Document Mode: IE 7 standards

I tested the same UI in three systems and the page got rendered in two systems but I received a script error in one system and I am not able to find the reason for that error.

Error details in the below line at character 4:

Object doesn't support this action

var req = new XMLHttpRequest();

I am not able to find out the reason why the same application runs smooth in other browsers having the same settings.

Try using new ActiveXObject("Microsoft.XMLHTTP") instead, although according to MS, IE7 has support for native XMLHttpRequest. — Zaffy
@Zaffy But the problem should occur in all the systems with the same browser settings. Why is that it renders properly in few but doesn't work in some? — goutam
Try using the F12 tools to verify that each machine is displaying the page in the same document mode. I think you'll find that one isn't. If they are consistent, then look into the add-ons used on each machine (and their versions) and the user's settings, including the compatibility view settings (available from the gear menu) and the security zone preferences/site lists. — Lance Leonard
@LanceLeonard They were in the same document modes. I guess it was due to some version problems in the updates. I disabled all add-ons and uninstalled the updates and tried installing again, it seemed to work fine. — goutam
Have you tried running IEDigest (regente.de/IEDigest) to compare the difficult machine with one that's working? — Lance Leonard

securecodeninja securecodeninja · Accepted Answer · 2015-01-07T22:25:17

If you're saying that the IE settings (and version) is exactly identical across all 3 machines then a lot of factors can be considered with this issue and it can span from connectivity, specifications, etc. - anything that can differentiate one PC to another which will be difficult to identify.

For the benefit of the doubt, we can give a try on the following:

Tweak your code to create the XMLHttpRequest object once the window loads

window.onload = function() { var req = new XMLHttpRequest(); }

or

Reset the IE settings of the machine where the app doesn't render properly

http://windows.microsoft.com/en-us/internet-explorer/reset-ie-settings#ie=ie-10

Browser support Internet Explorer 10 - Compatibility Mode

2 Answers