New-Object : Exception calling ".ctor" with "2" argument(s): "Cannot process argument because the value of argument "password" is null.

[yaobaobao2002]

When create a service principal. and try auto login azure account I copy below code

1. $credentials = New-Object Microsoft.Azure.Commands.ActiveDirectory.PSADPasswordCredential -Property @{StartDate=Get-Date; EndDate=Get-Date -Year 2024; Password="xxxxxxxxxxxxxxx"}
2. $sp = New-AzAdServicePrincipal -DisplayName ServicePrincipalName -PasswordCredential $credentials
   3.$pscredential = New-Object -TypeName System.Management.Automation.PSCredential($sp.ApplicationId, $sp.Secret)

However there is error saying
New-Object : Exception calling ".ctor" with "2" argument(s): "Cannot process argument because the value of argument "password" is null.
I've thought I already give argument of password in the 1st step?

[BharathNimmala-MSFT]

@yaobaobao2002 Thank you for reaching out. Please be noted that this channel is only to drive document improvements with in Azure Power Shell Docs. It would be great if you can share the documentation link you are referring, so that we can assist you accordingly.

[yaobaobao2002]

Hello Please refer below link and attachment https://docs.microsoft.com/en-us/powershell/azure/create-azure-service-principal-azureps?view=azps-4.3.0 and https://docs.microsoft.com/en-us/powershell/azure/authenticate-azureps?view=azps-4.3.0 [cid:image001.png@01D64D27.260407F0]

[mikefrobbins]

Correct, you've already created a credential object in step 1. If these three steps exist together in one of the docs, please let us know where. It appears step 1 and 2 are taken from the first doc and step 3 is taken from the second doc.

Import-Module -Name Az.Resources # Imports the PSADPasswordCredential object

$credentials = New-Object Microsoft.Azure.Commands.ActiveDirectory.PSADPasswordCredential -Property @{StartDate=Get-Date; EndDate=Get-Date -Year 2024; Password=<Choose a strong password>}

$sp = New-AzAdServicePrincipal -DisplayName ServicePrincipalName -PasswordCredential $credentials

After running the previous code, you can connect using the service principal:

Connect-AzAccount -ServicePrincipal -Credential $pscredential -Tenant $tenantId

The reason the following line generates an error is because service principals with user defined passwords don't have a Secret property.

$pscredential = New-Object -TypeName System.Management.Automation.PSCredential($sp.ApplicationId, $sp.Secret)

The second doc creates a service principal with an autogenerated password. This code is used in that particular doc since the user wouldn't know the password.