For communication between our Veeam backup for Microsoft 365 portal and Microsoft 365 tenant you need to have a certificate. If you prefer you can use a self signed certificate. This article describes how you can do this.
Make sure you are admin on your windows system
Make sure you run Powershell as an administrator
You can execute the following powershell scripts where you have to specify the following parameters before executing:
Enter passwors string: ConvertTo-SecureString -String "Enter password" (note password will be displayed in clear text)
Export-PfxCertificate: -FilePath C:\temp\$Certname.pfx -Password $pw (this will create the PFX file in C:\temp directory, make sure it exists.
# Create and export a self-signed certificate # Define certificate name $Certname = Read-Host “Enter Certificate Name” # Define expiration $YearsToExpire = Read-Host “How many years should this certificate be valid” Write-Host "Creating Certifcate $Certname" -ForegroundColor Green # Create certificate $Cert = New-SelfSignedCertificate -certstorelocation cert:\localmachine\my -dnsname $Certname -NotAfter (Get-Date).AddYears($YearsToExpire) -FriendlyName $Certname Write-Host "Exporting Certificate $Certname to $env:USERPROFILE\Desktop\$Certname.pfx" -ForegroundColor Green # Set password to export certificate $pw = ConvertTo-SecureString -String "Enter password" -Force -AsPlainText # Get thumbprint $thumbprint = $Cert.Thumbprint # Export certificate Export-PfxCertificate -cert cert:\localMachine\my\$thumbprint -FilePath C:\temp\$Certname.pfx -Password $pw
When executing the script it will ask you to provide the following information:
Years that the certificate should be valid
When creation of the PFX file is done
it has stored the certificate in your personal cert store
In this example it exported the pfx file to C:\temp