Skype Exchange 4U

Microsoft Skype Exchange Server Blog

Check Install Skype version on Server PowerShell

If you want to check with Date wise when version was install on server run this command.

Get-ItemProperty HKLM:\Software\Microsoft\Windows\CurrentVersion\Uninstall\* | ?{$_.DisplayName -like "Skype for Business*"} | sort DisplayName | ft -AutoSize DisplayName, DisplayVersion, InstallDate

If you only need to know the install version .

Get-WmiObject -query ‘select * from win32_product’ | where {$ -like "Skype for Business*"} | sort Name | ft -AutoSize Name, Version