New Lync 2013 Server Install - Users cannot find any contacts in the address book

This is a completely fresh Lync 2013 install on a test domain. There are only two servers on the domain currently, a domain controller and the Lync front end server.

I have the Front End server completely installed and the various clients connect without issue. However, they can't actually chat with each other at all because you can't find anyone when you type a name into the search. You only get this message:

"Address book synchronizing. Results may not be current."

I'm sure I am making some huge noob mistake right now. Do I have to have Exchange installed in order for Lync to work or should a domain controller and the Lync server be enough?

Thanks for any advice that anyone can give me.
Rob SandersAsked:
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Cliff GaliherCommented:
You don't need exchange installed. But the address book is updated on the server usually nightly so nee users added to Lync won't be visible immediately. Then clue t takes time to pull down the address book too, so if there were a lot of users making a large address book, the whole process can take a bit Initially. With 2013, the client /server address book sync occurs over a web service so you have to have 443 open and working. The Lync BPA should check this, as I believe does the Lync connectivity analyzer. Both worthwhile tools.

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Rob SandersAuthor Commented:
Ok, thanks for the info. It seems that waiting ovenight made a difference as when I checked on the client today it does seem like they are able to search for users. However, when I log in to Lync as a different user they are getting the same message of

"Address book synchronizing. Results may not be current."

It would seem there is something amiss here, as I wouldn't have thought this would happen for each user that logs in to Lync. Also, I wonder if there is a way to manually force this process to happen more quickly.

Thanks you for suggesting the Lync BPA and Lync connectivity analyzer. I will try running the BPA and see if it presents anything noteworthy.
Cliff GaliherCommented:
On the client side, each user does indeed pull down their own copy of the address book. The system will wait a random amount of time after sign in to pull down the address book so that the server doesn't get hammered at, say, 8am when a bunch of users would usually log in. Once a copy is down, only differences (deltas) need to be synced at subsequent logins, and again, those happen shortly AFTER sign-in, not immediately.

It sounds like the system is working as designed. Just have a little patience.
Rob SandersAuthor Commented:
lol, ok thanks a lot.  I was just a little antsy that I did something wrong since I hadn't done a Lync install before.
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