How do configure Skype For Business to not start when macOS starts? [duplicate]

Solution 1:

Check System Preferences - Accounts for Sierra, Users and Groups for Catalina - Login Items and make sure it's added there.

Alternative 1:

Open the context menu on the icon in the dock -> options -> uncheck "open at login".

Alternative 2:

Open the terminal and type launchctl list | grep skype.

Then use sudo launchctl remove <name from the previous output> to prevent it from starting at login.