We have configured Lync 2010 Address book as web search only. The issue is for some users when they put 3 to 4 letters search is success. But when they put more letters it will fail. Giving error like Search failed. Like an Eg:
If i will search with charl ill display the result. But when you search withCharles it will fail even we do have users name with Charles.
Jayakumar K