Unable to remove a user from an azure group using Active Directory Client Remove method

Question

I was having a code which was running perfectly to remove a user from an azure group but suddenly It stops working..when I debug the code Remove() method is returning false as a boolean. Below is the code which is not working.Can anyone please suggest me a quick fix.

public static async Task RemoveUserFromGroup(IGroup group, IUser user) {

        RemoveFromGroupResult result = new RemoveFromGroupResult();
        try
        {                
            ((Group)group).Members.Remove(user as DirectoryObject);
            await group.UpdateAsync();
            result.ErrorMsg = string.Empty;
        }
        catch (Exception e)
        {
            result.IsAdded = false;
            result.ErrorMsg = e.Message;
        }

        return result;

Answer 1

According to my test, the code((Group)group).Member always returns null List. So we cannot use the code ((Group)group).Members.Remove(user as DirectoryObject); await group.UpdateAsync(); to remove group member.

According to the situation, I suggest you use the Rest API to remove group member

DELETE https://graph.windows.net/myorganization/groups/{object_id}/$links/members/{member_id}?api-version=1.6