In this article I will be explaining how to do an external guest invite through Graph API and power automate , this power automate flow can be invoked from a Microsoft form or from a sharepoint list or whatever you find applicable and the same procedures applies if you want to share your PowerApps canvas app with external Guests as well or give access to sharepoint site.
Step 1: Create App Registration in AD to be able to access the GRAPH API
- Login to Azure AD https://aad.portal.azure.com/
- Go to App Registrations and click on New Registration
- Give it a proper name so that you can identify it, Add the redirect URL to be the Link to your team and click Register.
4. Go to API Permissions and add User.Invite All and then Grant admin consent
To Get LINK to your Team -> Go to Teams and right click on the channel and click Get Link To Team
3. Generate Client Secret and copy it aside
4. Copy Tenant ID as well
Step 3: Manual Flow for the article purpose that takes an Input the User Email and Sends out the invitation.
- Create a new flow with an Input called “External User Email”
2. Add a compose Action for your teams URL as below
3. Call Graph API using HTTP Action
Parameters:
Method: Post
URI: https://graph.microsoft.com/v1.0/invitations
Body:
{
"invitedUserEmailAddress": "yyy@test.com",
"sendInvitationMessage":true,
"inviteRedirectUrl": "https://myapp.contoso.com"
}
Authentication: Active Directory OAuth
Tenant: Tenant ID you have copied
Audience: https://graph.microsoft.com
Client ID: Client ID you have copied
Credential Type : Secret
Client Secret: Secret you copied before
4. You need then to get the invited User Id, so add a compose data operation with the below expression
body('HTTP')?['invitedUser']?['id']
5. Then use the Add Member to Group to add the user to your Team channel Group
Now Time to test your flow : I added my personal email to the Input parameter
By Checking my personnel email , I get the below email
And by going to my Team i found me added as a Guest
MG 