Connecting to exchange Online with certificates instead of basic authentication

[carrk-osu]

Using a certificate thumbprint with a certificate already imported within Azure

# Set the needed settings to connect to EOL with a service account
$EOLSettings = @{
    CertificateThumbPrint = $env:CertificateThumbprint
    AppID = $env:ClientID
    Organization = "OregonStateUniversity.onmicrosoft.com"
    ShowBanner = $false
}

# Use "Splatting" to use the settings as the input for the command to connect to EOL
Connect-ExchangeOnline @EOLSettings

Using a certificate and the plaintext password to connect

$EOLSettings = @{
    # Set the needed settings to connect to EOL with a service account
    CertificateFilePath = ".\EXAMPLE.pfx"
    CertificatePassword = (ConvertTo-SecureString -String $env:CertificatePassword -AsPlainText -Force)
    AppID = $env:ClientID
    Organization = "OregonStateUniversity.onmicrosoft.com"
    ShowBanner = $false
}

# Use "Splatting" to use the settings as the input for the command to connect to EOL
Connect-ExchangeOnline @EOLSettings

[carrk-osu]

• Currently the Connect-ExchangeOnline function technically supports these features but only works on 'Desktop' versions of PowerShell.
• We should stop using basic authentication and start using certificates instead when Microsoft fixes this command to work with PowerShell "Core" versions.
• The code attached above can be used for testing and the final replacement to basic authentication.
• This issue can be disregarded If Microsoft provides a new Graph API that allows for changing the visibility setting in the GAL rather than using PowerShell.