Some web applications are picky about the browser you need to use. Websites and web-based applications will usually tell you what they are designed for and what you should access them with. Niche applications tend to be especially picky as smaller development teams can’t optimize complex web-based apps for the gamut of browsers available.
One of the most common issues seems to be Internet Explorer being upgraded through Windows Update causing compatibility problems. Luckily it’s fairly simple to “downgrade” to a version that works best with what you need to access. The installation is a little bit tougher to find than most installed programs, but not by much.
First off, go to the Control Panel on your system. This can be found by clicking the “Start” button, then selecting Control Panel from the Start menu. From the Control Panel, select “Uninstall a program” if the view is set to Category (default for Windows 7), or select “Programs and Features” from either the Small Icons or Large Icons view.
Select Windows Internet Explorer 10 (or Windows Internet Explorer 9 if going from 9 to 8) and then click on Uninstall. Your system will need to be restarted, but this will revert you to the previous version if you need to do so for compatibility with websites or web-based applications.