When was the last time you tried to upload a certificate to the Azure Key Vault? At the time of writing, you can’t from the portal.
Good news, you can using PowerShell. Below will guide you how to upload a private key certificate to Azure Key Vault:
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|### Log into Azure|
|$Subscription = (Get-AzureRmSubscription | Out-GridView –Title "Choose a Source & Target Subscription …" –PassThru)|
|Select-AzureRmSubscription –SubscriptionId $Subscription.Id|
|# Upload Certificate to Azure's Key Vault|
|$securepfxpwd = ConvertTo-SecureString –String 'password' –AsPlainText –Force # Password for the private key PFX certificate|
|$certificateName = 'My-Cert'|
|$vaultName = 'MyVault'|
|$cer = Import-AzureKeyVaultCertificate –VaultName $vaultName –Name $certificateName –FilePath 'C:\My-Cert.pfx' –Password $securepfxpwd|