I believe I've found a bug with the following, WP8 People hub (contacts), Outlook 2010 with hotmail connector to Hotmail/Live/Outlook. Every-now-and-then, I loose a contact (or two, or three, or ...) on the phone.
I believe I have been able to recreate the issue.
Having Outlook 2010 running on a PC for awhile, then the PC goes into Standby or Hibernate for several hours, you will occasionally find a person, or people, missing on your phone. Using a web browser to Hotmail/Live/Outlook to check your contacts, that everyone is there. Initiate a sync on your phone for contacts, and still not there.
Wake up the PC running Outlook 2010, initiate a "Send and Receive", making sure there are no errors, then exiting Outlook 2010. Wait 5-10 minutes, go to your phone an initiate another sync of contacts, viola!!! Everyone is back on your phone.
Weird.
I now make darn sure I exit Outlook 2010 when I done using it.
I believe I have been able to recreate the issue.
Having Outlook 2010 running on a PC for awhile, then the PC goes into Standby or Hibernate for several hours, you will occasionally find a person, or people, missing on your phone. Using a web browser to Hotmail/Live/Outlook to check your contacts, that everyone is there. Initiate a sync on your phone for contacts, and still not there.
Wake up the PC running Outlook 2010, initiate a "Send and Receive", making sure there are no errors, then exiting Outlook 2010. Wait 5-10 minutes, go to your phone an initiate another sync of contacts, viola!!! Everyone is back on your phone.
Weird.
I now make darn sure I exit Outlook 2010 when I done using it.