Windows 8.1 users should check this update for IE11for possible installation issues: Cumulative security update for Internet Explorer: December 19, 2018 for Windows 10, 8.1, 7
Known issues in this security update: After you install this security update on a computer that is running Windows Server 2012 R2 or Windows 8.1, the About Internet Explorer 11 dialog box will show KB4470199 (the December 11, 2018 security update for Internet Explorer) instead of KB4483187. Users can confirm they are protected by verifying that the version of jscript.dll is 5.8.9600.19230.
To get the complete details, you can search the Internet by entering: KB4483187
Note: The location of jscript.dll is: C:\Windows\System32
Right click on the jscript.dll file, select Properties and click on the "Details" tab to display the current version installed on your computer.
If your file version is 5.8.9600.19230 then you should manually run Windows Update and either install the IE11 update or if no IE11 update is listed then install the latest “Monthly Quality Rollup”