As it turned out, I ended up writing two versions of the script: one using standard PowerShell cmdlets from the Exchange Online PowerShell and Azure AD modules, the other using Graph API requests. The Graph version is faster but some people don’t like Graph-based scripts because of the requirement to register an Azure AD app, consent to permissions, and so on.
Time and technology march on and it’s time to review any script that uses the Azure AD module because of its imminent deprecation in June 2023. Imminent sounds like a strange word to use about something that will happen in five and a half months but time slips away and there’s always something different to be done. I had the time and was already committed to upgrading the script to report “stale” guest accounts, so it seemed like a good idea to plunge into the code and replace the Azure AD and Exchange Online cmdlets with the Microsoft Graph PowerShell SDK.
Scripts to Process Azure AD Accounts and Groups
I’ve come to the view that it’s now best to use the SDK for anything to do with Azure AD accounts and groups. Because the Exchange Online management module contains cmdlets that operate against Microsoft 365 groups, I could have used those cmdlets in the script, but it’s easier when a script uses just the one module.
The two versions of the scripts are available from GitHub:
Among the changes made to upgrade the script were:
Connect to the Graph with Connect-MgGraph, setting appropriate permissions and selecting the beta endpoint.
Replace the Exchange Get-Organization cmdlet with SDK Get-MgOrganization to fetch tenant name.
Replace Get-AzureADUser with Get-MgUser. The filter used with Get-MgUser fetches only licensed accounts (excludes guests and accounts used for room and resource mailboxes). Replacing Get-AzureADUser is one of the more common changes that people will make as they upgrade scripts. See this article for more information.
Replace Get-UnifiedGroup with Get-MgTeam to fetch a list of team-enabled groups.
Replace Get-Recipient with the Graph MemberOf API to find the set of groups a user is a member of. The Invoke-MgGraphRequest cmdlet runs the Graph query to remove the need to register an app.
Use Get-MgGroupOwner to return group owners instead of fetching this information from the ManagedBy property available with Get-UnifiedGroup.
Other miscellaneous changes of the type that you find you make when reviewing code.
The code generates the same reports as before (HTML report – Figure 1 – and two CSV files). All the change is in the plumbing. Nothing is different above water.
Figure 1: HTML version of the Microsoft 365 Groups and Teams report
Unpredictable Upgrade Effort
It’s hard to estimate how long it will take to upgrade a script to use the Microsoft Graph PowerShell SDK. Factors include:
The number of lines of code in the script.
The number of Azure AD cmdlets to replace.
How easy it is to replace a cmdlet. Microsoft publishes a cmdlet map to guide developers. The caveat is that sometimes the suggested SDK cmdlet generates different output to its Azure AD counterpart, meaning that some additional processing is necessary. Dealing with group members and owners are examples where changes are likely.
One thing’s for sure. The sooner an organization starts to inventory and upgrade its scripts, the sooner the work will be done and the less likely the effort will run into a time crunch when Microsoft deprecates the Azure AD and MSOL modules. Deprecation doesn’t mean that cmdlets necessarily stop working (some will, like the license management cmdlets). Support ceases and no further development of the deprecated modules happen, and that’s not a state you want for operational scripts. Time’s ebbing away…
So much change, all the time. It’s a challenge to stay abreast of all the updates Microsoft makes across Office 365. Subscribe to the Office 365 for IT Pros eBook to receive monthly insights into what happens, why it happens, and what changes to PowerShell modules mean for your tenant.
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