CSP access to tenants using powershell. Part 1

A short explanation of how to access customer tenant using a CSP tenant SPN credential connectiong to AzureAD and AZ. Have been struggling for a while to manage all our customers tenants using powershell scripts. It can be complicated to organize all the credentials, tenant domain, tenant id’s password expiry.

First step is to be able to use powershell in the CSP tenants and access the partnercenter module. To get this started Microsoft has published a script to create the SPN required for this. https://docs.microsoft.com/en-us/powershell/partnercenter/secure-app-model?view=partnercenterps-1.5 This script will help you create the SPN . When using the SPN for the first time you will have to consent it using an admin account. The “ConfigurePreconsent” argument adds the spn to the adminagents group, this result in the account being a global admin in the customer tenants. Next:

$credential = Get-Credential
$token = New-PartnerAccessToken -Consent -Credential $credential -Resource https://api.partnercenter.microsoft.com -TenantId 'Your Tenant Id'

This is to consent the spn and get the refresh token we will in further logins. TenantId is the ID of your partner tenant. First it asks for the credential of the newly created spn (appID and key), next it will require you to login and consent using a service account . In return you get a token. Remember to store the refresh token part in a secure place as this will be used in our next login.

$refreshToken = 'Enter the refresh token value here'
$credential = Get-Credential
$tenantId = 'Your Tenant Id'
$pcToken = New-PartnerAccessToken -RefreshToken $refreshToken -Resource https://api.partnercenter.microsoft.com -Credential $credential -TenantId $tenantId
Connect-PartnerCenter -AccessToken $pcToken.AccessToken -ApplicationId $appId -TenantId $tenantId

Here we connect to partnercenter. We got the $refreshtoken in the previous step. $credential is our appid and key returned from the script. $tenantid is the tenantid of the partner tenant. Returned from the connection is a new $pcToken. This $pcToken includes a new refresh token that we could store and use at next login, but the one we already got would still last for a default value of 90 days. We’ve had some issues it the MFA settings in the tenant allow the user to “not be asked for credentials in xx days” (So we always uncheck this box).

Part 2 will for the AZ connection to customer tenant.

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