Why is Twitter only showing in mobile phone mode now?

[Saram]

I recently realised that my Windows updates hadn't been updating automatically as they should have been. After much time spent working out the problem I finally got it sorted - 113 updates were due to be downloaded!
Got that sorted and it then asked which browser to make my default, etc. Chose IE and I've got the latest one as far as I'm aware (purchased my Samsung notebook 12 months ago new.)
Next thing when I go on Twitter using my laptop its giving me a weird view of it and says something like its because you have an old version of IE. So I go to upgrade the IE but it says I already have it!
Twitters fine when I use Chrome as browser but I want to get this sorted so that if I want to use IE I can without this niggly issue....
Any computer specialists who may be able to help me with this your advice will be much appreciated - thankyou in advance
Hmmm... now I can't even find IE in my list of programs when I go to 'uninstall' programs!?
What is going on? I can use it so I know its there... Please help anyone???
** Cant sort this niggley thing out with IE and Paypal and Twitter keep telling me I'm using an old version of it when I know I'm not! I've given up - Chrome is the way to go from now on

[Zishan]

The more important question is why you wanna use IE when you got Chrome? Lol... JK

Uninstall your IE browser and install it again. I am having the latest IE and Twitter is working perfectly on it. So, just give it a try