Q:

Outlook / Gmail 'too many simultaneous connections' error

I'm just setting up Outlook for Mac, and I'm trying to add a Google Apps application for business email (Gmail). I've set it up correctly (same details worked in Mac mail). But I keep getting two errors, either

or just a error asking for the username and password again.
Just to confirm the user name and password are correct, although when I go into menu command Tools -> Account and look in the password field for that account it's blank.
But if I just click cancel on the popup asking for my username password it just continues to get mail in the background for about 30 seconds, before again asking again for the password, or showing the above error which I can click 'yes' to and again it will get the mail. But after 30 seconds it does the same thing.
I've got two other accounts set up fine, one a horde account (hosted webmail using POP3) and the other a iCloud .me account running on IMAP.
What might be causing this and how I can remedy it?
A bit more background: the machine is a MacBook Pro running Mac OS X v10.7 (Lion).

Update 2013-11-02
I've updated Outlook to SP3, but I still get the same error.

A:

From Google Support article Too many simultaneous connections :

Gmail currently has a limit of 15 simultaneous IMAP connections per
  account.
Please note that your mail client may actually open multiple
  connections in the background. This means it's possible to reach a
  connection threshold simply by using only two mail clients to access
  the same account at the same time.

You have apparently too many client connections toward the same account.
I also conclude that Outlook is apparently pretty wasteful on the number of connections.
If you are using the very same account from multiple computers,
then this is your problem.
Gmail is really made to be invoked with only one unique gmail account per computer.
I believe that the password request dialog is just a rather lame attempt by Outlook to "solve" the connection problem.

