The user is unable to search for a contact in their Lync Address book (search field) by username, Last name or First name. However the search works normally if user searches by SIP address. There are also many reasons why this could fail, below is but one reason.
Lync Shows the following error:
The Address Book Server is experiencing issues. Please try again later. If the problem continues, contact your support team
- Fix the clients clock to verify its in sync with the Lync/Active Directory servers time. *Note: Even if it’s a few minutes off it can break the address book.