Skype for Business Mac Client version 16.15.166 crashes every time on start

Running MacOS 10.13.4 and S4B client 16.16.102 I was experiencing the S4B app crashing too. I've found clearing app cache solved the problem for our Mac users.

1. Clear the Skype for Business cache:
2. Log out and quit Skype for Business.
3. Go to Finder> press Command+Shift+G> type in /users/<MacUsername>/library > delete the following files:

• Containters > com.microsoft.SkypeForBusiness
• Internet Plug-Ins > MeetingJoinPlugin.plugin
• Logs > LwaTracing
• Saved Application State > com.microsoft.SkypeForBusiness.savedState
• Preferences > com.microsoft.skypeforbusiness.plugin.plist

1. Clear the Keychain access.

Open Keychain Access from /Applications/Utilities folder. Delete all keychains starting with Skype for Business.