Warning: The retired, out-of-support Internet Explorer 11 desktop application has been permanently disabled through a Microsoft Edge update on certain versions of Windows 10. For more information, see Internet Explorer 11 desktop app retirement FAQ.
Assume that you select the Warn if changing between secure and not secure mode option in the Advanced tab of the Internet Options dialog box in Internet Explorer 11 in protected mode. When you browse HTTPS web pages, you expect to receive the following warning message:
You are about to view pages over a secure connection.
However, the warning message is not displayed, and navigation to the HTTPS web page fails.
To resolve this problem, install the most recent cumulative security update for Internet Explorer. To do this, go to Microsoft Update. Additionally, see the technical information about the most recent cumulative security update for Internet Explorer.
Note This update was first included in the November cumulative security update for Internet Explorer (MS14-065).
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.
See the terminology that Microsoft uses to describe software updates.