Add user to group through REST API does not work C#

[arberceni]

Hello everyone,

I am trying to share a workspace with a user outside my organization by using PowerBI .NET SDK (C#).

I am using the following code:

Invitation invitation = new Invitation{
                            InvitedUserEmailAddress = "username@tenant.onmicrosoft.com",
                            InviteRedirectUrl = "<url>",
                            SendInvitationMessage = true,                            
                        };

var res = await graphClient.Invitations.Request().AddAsync(invitation);

GroupUser gu = new GroupUser("Viewer", "username@tenant.onmicrosoft.com", null, "username@tenant.onmicrosoft.com", PrincipalType.User);

await client.Groups.AddGroupUserAsync(Guid.Parse(<workspace_id>), gu);

No errors are thrown from this code and the guest user DOES appear in the admin portal as well as in the "access" pane of the workspace.

However, the problem is that the user this workspace is shared with (username@tenant.onmicrosoft.com) is not able to see the workspace or the reports inside the workspace. If the same process is done through the UI it works perfectly.

Has anyone had the same problem?

Regards,

Arber

[arberceni · Accepted solution]

Hello all,

In case someone else is looking for a solution to this problem:

When inviting a guest user with e-mail address: username@tenant.onmicrosoft.com, their username in the new new tenant will be:

username_tenant.onmicrosoft.com#EXT#@newtenant@onmicrosoft.com and this username has to be used when creating a GroupUser object. (newtenant is the tenant from where the workspace was shared). So the code becomes:

Invitation invitation = new Invitation{
                            InvitedUserEmailAddress = "username@tenant.onmicrosoft.com",
                            InviteRedirectUrl = "<url>",
                            SendInvitationMessage = true,                            
                        };

var res = await graphClient.Invitations.Request().AddAsync(invitation);

GroupUser gu = new GroupUser("Viewer", "username_tenant.onmicrosoft.com#EXT#@newtenant.onmicrosoft.com", null, "username_tenant.onmicrosoft.com#EXT#@newtenant.onmicrosoft.com", PrincipalType.User);

await client.Groups.AddGroupUserAsync(Guid.Parse(<workspace_id>), gu);

Hope this helps anyone else!

Regards,

Arber

[ScottStauffer]

I wonder if this "How to" in Microsoft docs would help?

https://docs.microsoft.com/en-us/power-bi/admin/service-admin-azure-ad-b2b

[arberceni]

Hello Scott,

Thank you for your reply!

The "How to" you shared describes how the sharing is done through the user interface and I can confirm that it works as expected. The problem is that when I try to perform the same steps through the REST API it doesn't work.

Regards,

Arber