Exchange Server build numbers
Using the Exchange Management Shell, it pretty easy to use Powershell and find your Exchange Server build numbers and release dates. Listed below is the command you can run to find your current Exchange Build and release number.
Below we have checked the build for an Exchange Server 2013.
Exchange Server 2016
Get-ExchangeServer | Format-List Name, Edition, AdminDisplayVersion
Exchange Server 2013
Get-ExchangeServer | Format-List Name, Edition, AdminDisplayVersion
Exchange Server 2010
Get-Command ExSetup | ForEach {$_.FileVersionInfo}
You can use the information in this topic to verify the version of Exchange that is running in your organization.
Compare your Build and release to the current Microsoft Exchange Server Updates and build numbers: