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.
Symptoms
The Enterprise Mode and Enterprise Site Discovery features don't work correctly in Internet Explorer 11 on a computer that's running Windows 8.1 or Windows 7. This issue occurs even though you have installed MS15-032 Cumulative Security Update for Internet Explorer (3038314) or MS15-043 Cumulative Security Update for Internet Explorer (3049563).
Resolution
To resolve this issue, 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 Cumulative security update for Internet Explorer: June 9, 2015 (MS15-056).
Status
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.
References
For more information about the Enterprise Mode and Enterprise Site Discovery feature, see Announcing improvements to Enterprise Mode and Enterprise Site Discovery.
See the terminology that Microsoft uses to describe software updates.