Receiving error with outlook 2007 email

I started to receive error messages with Outlook 2007 today saying the server can't be reached.  Xfinity had requested that I change my password so I entered to new password in the advanced settings.  

If I make two or three attempts to download email, I finally get email.  This is strange behavior.  I checked my computer wifi settings and everything is OK.

Any ideas about what is happening?

Thanks,

Lynnea