I don't know. But I'm using firefox and having no problems.
If you've already downloaded the latest msn, you have to uninstall it. It is actually 3 separate programs. You can figure it out if you go to your control panel and click add/remove programs.
After you uninstall, you will need to download and install version 8.5.
If you've already done all that, you've exhausted my volume of knowledge. Sorry.