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Disable local authentication in Azure AI Services

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Azure AI Services provides Microsoft Entra authentication support for all resources. This feature provides you with seamless integration when you require centralized control and management of identities and resource credentials. Organizations can disable local authentication methods and enforce Microsoft Entra authentication instead.

How to disable local authentication

You can disable local authentication using the Azure policy Azure AI Services resources should have key access disabled (disable local authentication). Set it at the subscription level or resource group level to enforce the policy for a group of services.

If you're creating an account using Bicep / ARM template, you can set the property disableLocalAuth to true to disable local authentication. For more information, see Microsoft.CognitiveServices accounts - Bicep, ARM template, & Terraform

You can also use PowerShell with the Azure CLI to disable local authentication for an individual resource. First sign in with the Connect-AzAccount command. Then use the Set-AzCognitiveServicesAccount cmdlet with the parameter -DisableLocalAuth $true, like the following example:

Set-AzCognitiveServicesAccount -ResourceGroupName "my-resource-group" -Name "my-resource-name" -DisableLocalAuth $true

Verify local authentication status

Disabling local authentication doesn't take effect immediately. Allow a few minutes for the service to block future authentication requests.

You can use PowerShell to determine whether the local authentication policy is currently enabled. First sign in with the Connect-AzAccount command. Then use the cmdlet Get-AzCognitiveServicesAccount to retrieve your resource, and check the property DisableLocalAuth. A value of true means local authentication is disabled.

Re-enable local authentication

To enable local authentication, execute the PowerShell cmdlet Set-AzCognitiveServicesAccount with the parameter -DisableLocalAuth $false.  Allow a few minutes for the service to accept the change to allow local authentication requests.

Next steps