It started with an user reporting that, when he changes from networks (ex: wired to wireless) his phone numbers on the Lync client disappear. After more than 48 hours of simulation I was able to identify the issue. It turns out that when you have a Distribution Group on your contact list where your account is member, when you expand the list, your users Active Directory phone numbers disappear. Here’s the issue report:
The user personal phone numbers on the Lync client disappear when he expands an Active Directory distribution list where he is a member.
When the phone numbers disappear, they become unavailable to several call features (transfer calls, user the ‘join audio from’ in meetings)
- Affects all telephones numbers of the user stored on Active Directory.
- Affects users that have (active directory) distribution groups where their user is a member
- Doesn’t affect phone number entered manually by the user on the Lync Client
2. Search and add an active directory distribution list where the user is a member;
- After using the workaround, collapsing or expanding the same distribution list, the phone numbers don’t disappear until you logout/login back again to the Lync client and expand a list;
- If you have more similar lists on the personal contacts and expand it will cause the same issue;
- If you close the Lync client with the Distribution Group expanded, when you sign-in the number will disappear;
- Even with the Distribution Group collapsed the number migth disappear at the sign-in.
UPDATE: the issue has been solved with the September 8, 2015 security update (KB3085500)