After the update KB4018326 was applied to my Windows 10 1709 Office 2016 ProPlus (MSI volume installation) workstation, Skype for Business is crashing on startup. The "Windows Security Skype for Business" sign-in window does not display. It appears as if Skype for Business crashes immediately upon trying to display that login window. Interestingly enough as a workaround I am able to open Outlook 2016 and sign-in using the same "Windows Security" login window. After doing that Skype for Business will open and load just fine.
If I uninstall this update the issue is not present.
I'm not sure where to post this, however I wanted to bring it Microsoft's attention.
*edit:
Event logs report:
Application Error - Event ID 1000 - Faulting application name: lync.exe and Faulting module name: KERNALBASE.dll