This seems to be a commonly known issue and there has been several threads about this though I havn't seen a solution (other that setting the page to older IE versions with for instance a dev tool). There is an internal investigation going on at EPiServer to see if and how the most urgent issues with CMS 6 R2 and EPiServer can be solved.

Cool thanks for the quick reply. 

Will ask the customer to run Chrome or FF while we wait

-edited for typos-

I'm still having issues with this. Every time I navigate into editmode, IE 11 goes into document mode 5. 

I have installed the fix here: http://world.episerver.com/Articles/Items/EPiServer-CMS-6-R2--Update/

Have anyone tried this and made it work?

I'm working on an intranet if that makes any difference.

@Andreas: We haven't changed the document mode in that hotfix, what is the problem you are experiencing?

Hi Magnus.

I'm experiencing the following:

1. I go to our site i viewmode with IE11. I check with F12-developer tools, and see that the documentmode is Edge

2. I then right-click and go into editmode. I check with F12 again, and see that documentmode is now 5

3. If I ie try to insert an image in a xhtml-field, there is noe button to choose the file (thats one of the errors the hotfix should fix)

4. If I manually set the document mode to edge the button appears. 

Hmm.. Could it be that you have the "Display intranet sites in Comabiility View" set in the Compability View Settings and that makes IE jump to docmode 5?

Hi Petter

It happens even when "Display intranet sites in Comabiility View" is turned off.

Hmm and the site isn't listed in the same view  under sites you've added?

Hi,

We are several that have the same problem. Please se the comments under http://world.episerver.com/Support/Bug-list-beta/bug/111615/

Is there any solution / workaround for this? Manually change the document mode does not work for me...

Hi all, I managed to find a moment to install IE11 yesterday evening. However when I logged into the site and the edit mode appeared, I noticed that the domain name had changed to random numbers and letters and the edit screen was just plain text, the 'Structure tab' was automatically refreshing every 2 seconds (worked fine in FF/Chrome).

I'm not sure if this "fix" will work for everyone and it is by no means a solution to the problem, but I went into Tools > Compatibility View Settings and added the domain to the list of websites to enable compatibility view for. The domain is not defined as trusted or intranet in IE secrity sites list. Dev Tools is still showing the site as Document Mode 5 (Default).

I hope this may help as a temporary fix for some of you, until a more permanent fix is rolled out.

Does anybody know if there is a fix for this issue yet? The latest hotfix we have installed is hotfix-6.1.379.1000 and we still have document mode 5 in IE 11 when in Edit mode. The result is that the editors have problems previewing the pages since the layout is very different/faulty when rendered in document mode 5. Changing browser settings is not an option since this particlular site has 800+ active editors.

We'll be submitting this issue as a bug, thank you the feedback.