Hi Barbara,
Welcome to Microsoft Community Forums.
As per the description, you are unable to uninstall Trend Micro Security as you get CEF Initialization error. - Failed to load the required Icudt Library.
Let’s troubleshoot and try to resolve the problem. Please answer few questions to narrow down the issue.
Do you have multiple antivirus programs installed on the computer?
Please refer to the articles:
Uninstalling Trend Micro program using the Trend Micro Diagnostic Toolkit
http://esupport.trendmicro.com/solution/en-us/1037161.aspx
Uninstalling Trend Micro Internet Security Pro and Trend Micro Internet Security 2008
Fix problems with programs that can't be installed or uninstalled
http://support.microsoft.com/mats/Program_Install_and_Uninstall
Please post back with the result. If the issue is still not resolved, we'll be glad to assist you further. Do you let us know if you have any further issues with Windows in future.