GraphClient PatchAsync returns null values when Updating a User on B2C tenant

[Holystewe]

If I request a PatchAsync to update a user on a B2C tenant with GraphClient, it should return the updated user. This worked a week ago, now the GraphClient response is always null, even if the user is properly updated (i've double checked on the B2C tenant to see if it's updated).

Here's the lines of code where i perform the actual call:

    public async Task<DefaultResponse<B2CUserDto?>> UpdateB2CUserAsync(CreateUserRequest request, string id)
    {
        try
        {
            var user = await graphClient.Users[id].GetAsync();

            if (user is null)
                return new()
                {
                    IsOk = false,
                    Message = $"Failed to retrieve user with Id {id}",
                    StatusCode = ApplicationStatusCode.NotFound
                };

            var mappedUser = b2CUserMapper.Map(request);

            var response = await graphClient.Users[id].PatchAsync(mappedUser);

            if (response is null)
                return new()
                {
                    IsOk = false,
                    Message = $"Failed to update user with Id {id}",
                    StatusCode = ApplicationStatusCode.ServerError
                };

            return new()
            {
                IsOk = true,
                Message = "User successfully updated",
                Value = b2CUserMapper.MapToDto(request, id)
            };
        }
        catch (Exception ex)
        {
            return new(ex.Message);
        }
    }

Here's the response I got two days ago:

And the actual response is null instead.

[andrueastman]

Thanks for raising this @Holystewe

Any chance you are able to follow the guidance from the link below to log the HTTP request? This will help ascertain if the API is returning json or a successfull response with no content.

https://github.com/microsoftgraph/msgraph-sdk-dotnet-core/blob/main/docs/logging-requests.md

[microsoft-github-policy-service]

This issue has been automatically marked as stale because it has been marked as requiring author feedback but has not had any activity for 4 days. It will be closed if no further activity occurs within 3 days of this comment.