Users with Internet Explorer 9 and above will not be able to connect to CEM+ versions before 3.0.
The solution is to make internet explorer 9 pretend it is IE6 by emulating its user-agent string.
Microsoft has incorporated Developer Tools into Internet Explorer 9 which can be set up to do just that by following the instructions below.
Step 1: With the Internet Explorer window open, type [F12] to open the Internet Explorer 9 Developer Tools.
Step 2: Left-click on Tools on the new window that appears (or new section at the bottom of the IE window)
Step 3: Left-click on Change user agent string->Internet Explorer 6
Step 4: Close the Developer Tools window or section
Step 5: Left-click on the Refresh button at the top of the browser page or type [F5]
To restore settings when work is completed: Follow steps 1-4 but choose Default in the drop-down
Note that there are different solutions for Internet Explorer 7 (Sensor+ Connect with Internet Explorer 7) and Internet Explorer 8 (Sensor+ Connect with Internet Explorer 8).