IT Tips! Lync Contact List not Updating, Showing Old Users.

Hello folks! This is my first of many IT blog posts, mainly to help me remember stuff, but you may glean some useful stuff off of it too.

At my work, we are currently rolling out a new Lync phone system, and this quirk started showing up with several users. This is what I did to solve it...

First! Make sure the user hasn't actually disabled their picture on their Lync client. You don't want to waste time on a more complex fix that will essentially do nothing if they have their photo hidden.

In rare cases, the contact list may be corrupted because of an invalid character in an "out of office" message or because a lingering deprovisioned contact exists. To resolve this problem, force a contact list update to make sure that your information is synchronized. To this, follow these steps:

1. Locate one of the following folders, depending on your operating system:
   • For Lync 2013:
     • Windows Server 2008 R2, Windows 7 and Windows 8: %localappdata%\Microsoft\Office\15.0\Lync\sip_<sign-in name>
   • For Lync 2010:
     • Windows Server 2008 R2, Windows 8, Windows 7, or Windows Vista: %localappdata%\Microsoft\Communicator\sip_<sign-in name>
     • Windows Server 2003, Windows XP: %userprofile%\Local Settings\Application Data \Microsoft\Communicator\sip_<sign-in name>
2. Delete the following files:
   • Galcontacts.db
   • galcontacts.db.idx
   • CoreContact.cache
   • ABS_<sign-in name>.cache
   • Mfugroup.cache
   • PersonalLISDB.cache
   • PresencePhoto.cache
3. Restart Lync, and then wait for 30 minutes for resynchronization to finish.