- Article
- 11/04/2022
- 5 minutes to read
In this article
In this guide, you’ll use the Microsoft Graph PowerShell SDK to perform some basic tasks. If you haven’t already installed the SDK, do so before following this guide.
API version
By default, the SDK uses the Microsoft Graph REST API v1.0. You can change the profile by using the Select-MgProfile command.
Select-MgProfile -Name “beta”
Authentication
The PowerShell SDK supports two types of authentication: delegated access, and app-only access. In this guide, you’ll use delegated access to sign in as a user, grant consent to the SDK to act on your behalf, and call the Microsoft Graph.
For details on using app-only access for unattended scenarios, see Use app-only authentication with the Microsoft Graph PowerShell SDK.
Determine required permission scopes
Each API in the Microsoft Graph is protected by one or more permission scopes. The user logging in must consent to one of the required scopes for the APIs you plan to use. In this example, we’ll use the following APIs.
The User.Read.All permission scope will enable the first two calls, and the Group.ReadWrite.All scope will enable the rest. These permissions require an admin account.
Using Find-MgGraphCommand to find required permissions
The Find-MgGraphCommand cmdlet can be used to discover the required permissions for another cmdlet. For example, to see all permissions that can be used to call Get-MgUser, run;
Find-MgGraphCommand -command Get-MgUser | Select -First 1 -ExpandProperty Permissions Name IsAdmin Description FullDescription —- ——- ———– ————— Directory.Read.All True Read directory data Allows the app to read data in your organization’s directory. Directory.ReadWrite.All True Read and write directory data Allows the app to read and write data in your organization’s directory, such as other users, groups. It does not allow the app to delete users or groups, or reset user passwords. User.Read.All True Read all users’ full profiles Allows the app to read the full set of profile properties, reports, and managers of other users in your organization, on your behalf. User.ReadBasic.All False Read all users’ basic profiles Allows the app to read a basic set of profile properties of other users in your organization on your behalf. Includes display name, first and last name, email address and photo. User.ReadWrite.All True Read and write all users’ full profiles Allows the app to read and write the full set of profile properties, reports, and managers of other users in your organization, on your behalf.
This output has been shortened for readability.
For more information on using this cmdlet, see Using Find-MgGraphCommand.
Sign in
Use the Connect-MgGraph command to sign in with the required scopes. You’ll need to sign in with an admin account to consent to the required scopes.
Connect-MgGraph -Scopes “User.Read.All”,”Group.ReadWrite.All”
The command prompts you to go to a web page to sign in using a device code. Once you’ve done that, the command indicates success with a Welcome To Microsoft Graph! message. You only need to sign in once per session.
Tip
You can add additional permissions by repeating the Connect-MgGraph command with the new permission scopes.
Call Microsoft Graph
Now that you’re signed in, you can start making calls to Microsoft Graph.
Note
Some requests for Azure Active Directory resources require the use of advanced query capabilities. If you get a response indicating a bad request, unsupported query, or a response that includes unexpected results, including the $count query parameter and ConsistencyLevel header may allow the request to succeed. For details and examples, see Advanced query capabilities on Azure AD directory objects.
Get the signed-in user
In this section, you’ll locate the signed-in user and get their user ID. You’ll need that to use as a parameter to the other commands you’ll use later. Start by running the following command.
Get-MgUser
This command outputs a listing of users in your Microsoft 365 organization.
Id DisplayName Mail UserPrincipalName — ———– —- —————– 88d1ba68-8ff5-4de2-90ed-768c00abcfae Conf Room Adams Adams@contoso.onmicrosoft.com Adams@contoso.… 3103c7b9-cfe6-4cd3-a696-f88909b9a609 Adele Vance AdeleV@contoso.OnMicrosoft.com AdeleV@contoso… da3a885e-2d97-41de-9347-5271ef321b58 MOD Administrator admin@contoso.OnMicrosoft.com admin@contoso.… e0c6ee40-e105-476d-9597-acd061d21fcb Alex Wilber AlexW@contoso.OnMicrosoft.com AlexW@contoso.… 17c6bdee-8ed3-49af-a65e-71b64cca8382 Allan Deyoung AllanD@contoso.OnMicrosoft.com AllanD@contoso… e5b78950-27cd-4f01-b083-eab4da97ca6a Conf Room Baker Baker@contoso.onmicrosoft.com Baker@contoso.… 40467725-1a58-495d-9e2f-5970c6306d8d Bianca Pisani BiancaP@contoso… ce73bdb5-bf12-405e-ab85-40122fdd6eb7 Brian Johnson (TAILSPIN) BrianJ@contoso.onmicrosoft.com BrianJ@contoso… df1347a3-7ce7-4b4d-8aab-7c65b5c907b9 Cameron White CameronW@contoso…
You can use an OData filter to help locate the specific user you want. Run the following command, replacing Megan Bowen with the display name of the user you signed in with.
$user = Get-MgUser -Filter “displayName eq ‘Megan Bowen'”
Verify that worked by entering the following.
$user.DisplayName
List the user’s joined teams
Now use the user’s ID as a parameter to the Get-MgUserJoinedTeam command.
Get-MgUserJoinedTeam -UserId $user.Id
Just like the Get-MgUser command, this command gives a list of teams. Select one of the user’s joined teams and copy its Id.
List team channels
Now use the team’s ID as a parameter to the Get-MgTeamChannel command, following a similar pattern of listing all channels, then filtering the list to get the specific channel you want.
Get-MgTeamChannel -TeamId $team.Id $channel = Get-MgTeamChannel -TeamId ID_FROM_PREVIOUS_STEP -Filter “displayName eq ‘General'”
Send a message
Now that you have both the Team ID and the channel ID, you can post a message to the channel. Use the following command to send the message.
New-MgTeamChannelMessage -TeamId $team.Id -ChannelId $channel.Id -Body @{ Content=”Hello World” }
This command differs from the previous commands you used. Instead of querying data, it’s actually creating something. In Microsoft Graph, this command translates to an HTTP POST, and it requires an object in the body of that post. In this case, the object is a chatMessage. The -Body parameter to the command maps to the body property on chatMessage. Other properties are mapped in a similar way, so you can change the message you send. For example, to send an urgent message use the following command.
New-MgTeamChannelMessage -TeamId $team.Id -ChannelId $channel.Id -Body @{ Content=”Hello World” } -Importance “urgent”
Sign out
Use the Disconnect-MgGraph command to sign out.
Disconnect-MgGraph