Sign in issues are a problem many Messenger users face. To help find out what the problem might be, we are presented with an error code, but what happens when there are two error codes at once? I don’t know myself, but I just experienced it.
The 80048820 error I see regularly, usually just when it times out, but the 80048411 I have never seen and I can’t find anyone else who has reported getting it. My guess is it’s just a quirk in the current release of Windows Live Messenger. Would be interested to hear from anyone else who has experienced anything similar.