About this update
This article describes an update that makes a change in Internet Explorer 11 in Windows 7, Windows 8.1, Windows 10, and Windows 10 version 1511. Internet Explorer no longer considers websites secure if they are protected by a Secure Hash Algorithm 1 (SHA-1) certificate. Therefore, the address bar lock icon has been removed from these sites. This update doesn't block sites from loading.
Note This will affect only those certificates that chain to a certificate authority in the Microsoft Trusted Root Certificate program.
How to get this update
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 MS16-084: Security update for Internet Explorer: July 12, 2016.
To have this change apply for Internet Explorer 11 in Windows 7, Windows 8.1, Windows 10, and Windows 10 version 1511, you must also install the following updates:
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.
For more information about this change, see An update to our SHA-1 deprecation roadmap.
Learn about the terminology that Microsoft uses to describe software updates.