Since starting in a new office.  I have started getting this error message: 

Mail could not be received at this time. The server for account "Gmail" returned the error "[ALERT] Too many simultaneous connections (Failure)." Your username/password or security settings may be incorrect. Would you like to try re-entering your password

Re-entering the password does nothing to stop this.

I have read many forums & there seems to be no solution.  This message comes up every 10 seconds and makes using Outlook impossible.  I am currently typing my emails in word then cutting and pasting into outlook and sending in between each 10 second.

I have Office for Mac 2011.  It has all the latest up dates. I am using IMAP accounts.

I have tried changing my gmail settings

Removing my keychains

Creating new identities

changing my schedules so it isn;t "send and receive all"

I do not have gmail on my phone but I do access it from home

Can anyone helps resolve this?