This issue occurs when you use certain keyboard layouts. For example, the Dutch (Belgium) keyboard layout can't produce characters such as the following, which require the AltGr key and the accent key (´):
Note This issue doesn't affect other programs, such as Notepad or Microsoft Word.
To fix 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 MS16-051: Security update for Internet Explorer: May 10, 2016.
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.
Learn about the terminology that Microsoft uses to describe software updates.