Windows Update KB3025390 can cause problems for IE

Windows Update is automatically applying KB3025390 but it can cause more problems for IE than it is intended to fix.

It was installed in my system today and then a C# Windows Forms program that uses a WebBrowser control was getting an Access Denied error. The program was working before the KB3025390 today. It now works as before after uninstalling KB3025390. Therefore if your Internet Explorer (including applications using it) develop problems then check if KB3025390 has been installed and if it was then consider uninstalling it.