Why is there an Outlook Security Notice whenever I open an EasiShare Desktop link?

Microsoft Outlook does not recognise the extension “es:” and tries to warn the user. To remove this message from prompting every time an EasiShare link is clicked, please execute one of the following methods:

Using Command Prompt:

REG ADD "HKCU\SOFTWARE\Policies\Microsoft\Office\16.0\Common\Security\Trusted Protocols\All Applications\es:"

Using Windows Powershell:

New-Item -Path "HKCU:\SOFTWARE\Policies\Microsoft\Office\16.0\Common\Security\Trusted Protocols\All Applications" -Name "es:"