The relevance in the actionscript fails: (singular expression refers to a non unique object)
name of key whose (name of it starts with "{" and (it contains "Skype" AND it != "Skype Click to Call" AND it does not contain "Toolbars" AND it does not contain "Update for Skype for Business") of (value "DisplayName" of it as string)) of key "HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall" of registry
whenever Microsoft Skype for Business MUI (English) 2016 is present.
It should have Microsoft Skype for Business added to the list of exclusions, like this:
name of key whose (name of it starts with "{" and (it contains "Skype" AND it != "Skype Click to Call" AND it does not contain "Toolbars" AND it does not contain "Update for Skype for Business" AND it does not contain "Microsoft Skype for Business") of (value "DisplayName" of it as string)) of key "HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall" of registry
The following change was made to Version 967. name of key whose (name of it starts with "{" and (it contains "Skype" AND it != "Skype Click to Call" AND it does not contain "Toolbars" AND it does not contain "Skype for Business") of (value "DisplayName" of it as string)) of key "HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall" of registry
And it’s tested in non-MUI Skype for Business environment.